New Zealand Journal of Crop and Horticultural Science (NEW ZEAL J CROP HORT)

Publisher: Royal Society of New Zealand

Journal description

New Zealand Journal of Crop and Horticultural Science is an international research journal published for researchers in research institutes, universities, and other organisations worldwide concerned with all aspects of crop and horticultural science. New Zealand Journal of Crop and Horticultural Science publishes original research papers, review articles, and commentaries on all aspects of the production, protection, handling, and processing of crop and horticultural products. The scope of the journal encompasses agricultural economics, agronomy, biotechnology, entomology, plant nutrition, plant breeding, plant pathology, pomology, postharvest physiology, soil science, and viticulture. Papers on any horticultural crops are appropriate but the journal particularly encourages contributions on kiwifruit, apples, wine grapes and oenology, as well as papers on biosecurity, new crop and horticultural products and descriptions of new cultivar releases. Short communications, Book reviews, and Letters to the Editor are also published.

Current impact factor: 0.61

Impact Factor Rankings

2016 Impact Factor Available summer 2017
2014 / 2015 Impact Factor 0.605
2013 Impact Factor 0.271
2012 Impact Factor 0.481
2011 Impact Factor 0.544
2010 Impact Factor 0.247
2009 Impact Factor 0.481
2008 Impact Factor 0.303
2007 Impact Factor 0.248
2006 Impact Factor 0.173
2005 Impact Factor 0.341
2004 Impact Factor 0.338
2003 Impact Factor 0.292
2002 Impact Factor 0.394
2001 Impact Factor 0.431
2000 Impact Factor 0.225
1999 Impact Factor 0.273
1998 Impact Factor 0.122
1997 Impact Factor 0.297
1996 Impact Factor 0.292
1995 Impact Factor 0.313
1994 Impact Factor 0.273
1993 Impact Factor 0.152
1992 Impact Factor 0.231

Impact factor over time

Impact factor

Additional details

5-year impact 0.55
Cited half-life >10.0
Immediacy index 0.07
Eigenfactor 0.00
Article influence 0.16
Website New Zealand Journal of Crop and Horticultural Science website
Other titles New Zealand journal of crop and horticultural science
ISSN 0114-0671
OCLC 20346537
Material type Government publication, National government publication, Periodical
Document type Journal / Magazine / Newspaper

Publisher details

Royal Society of New Zealand

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author cannot archive a post-print version
  • Restrictions
    • 2 years embargo
  • Conditions
    • On author or institutional server only
    • Publisher copyright and source must be acknowledged
    • Must link to publisher version
  • Classification

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Stripe rust of wheat (Triticum aestivum), caused by Puccinia striiformis f. sp. tritici, is highly affected by temperature, but the role of crop canopy temperature in stripe rust resistance is poorly understood. Five wheat varieties, which have different canopy temperatures and are susceptible to P. striiformis f. sp. tritici at the seedling stage, were investigated for resistance to stripe rust at the adult-plant stage in greenhouse and field experiments. In the greenhouse tests, all five varieties were resistant to stripe rust at the adult-plant stage. At the grain-filling stage in the 2007–2010 field experiments at two locations, the two varieties (NR 9405 and 9430) with higher canopy temperatures had lower disease index and smaller area under the disease progress curve values than the three varieties (Shaan 229, RB 6 and Xiaoyan 6) with lower canopy temperatures. The results indicated that the five tested wheat varieties had similar resistance reactions to stripe rust at the adult-plant stage in the greenhouse experiment, but showed different levels of resistance under natural infection conditions in the field. The negative correlation between canopy temperature and disease index during the grain-filling stage was significant. Thus, high wheat canopy temperatures provide unfavourable conditions for the development of stripe rust. This study is helpful for further developing an ecological approach for reducing stripe rust damage.
    No preview · Article · Nov 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: Early senescence is the main limiting factor during the marketing of cut flowers. The current experiments were aimed at understanding the effects of pre- or post-transport application of salicylic acid (SA) on physicochemical characteristics affecting vase life of cut flower spikes of gladiolus cv. Amsterdam. SA was foliar sprayed at 0, 0.5, 1 or 2 mM concentrations on harvested flowers before or after simulated transport to local market, in order to evaluate its effect on post-harvest qualities and physiochemical parameters. The results showed that 0.5 mM SA significantly increased flower vase life, as well as membrane stability, anthocyanin and flavonoid concentrations, and activities of catalase and superoxide dismutase enzymes in the flower petals. The relative fresh weight was not significantly affected by SA foliar treatment applied pre- or post-transport. Significant reduction was observed in lipid peroxidation of the SA-treated flowers, compared with the control group. The results suggest that foliar application of SA, especially at low concentration (0.5 mM), improves gladiolus vase life through modulating its antioxidative system and reducing lipid peroxidation. This treatment can be easily applied for commercial use.
    No preview · Article · Nov 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: Five inbred lines of tomato were crossed in a half diallel fashion to estimate the combining ability, mode of gene action, extent of heterobeltiosis and dominance effects in the inheritance of fruit yield, processing qualities and disease severity traits. A preponderance of non-additive gene action was detected for all studied characters except fruit weight, indicating that heterosis breeding is an appropriate strategy for their improvement. Maximum heterobeltiosis was observed for the percent disease index (PDI) of tomato leaf curl viruses (ToLCV), followed by the number of locules per fruit, PDI of early blight, fruit yield per plant, lycopene content of fruit, vitamin C content of fruit, total soluble solids content of fruit and acidity content of fruit. Partial- to over-dominance effects were involved in the inheritance of the studied traits. Three lines (CLN 2777E, BCT-115 and CLN 2777F) were identified as potential donors. We recommend that two hybrids (CLN 2777 F × CLN 2777 E and CLN 2777E × Ailsa Craig fulgens) would be appropriate for commercial use following further evaluation of their traits, as they exhibit desirable horticultural traits, particularly in the tropics.
    No preview · Article · Nov 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: Wheat-rye translocations carry valuable genes for pest resistance; this has led to their incorporation into wheat varieties. To develop gene-based 1RS specific markers, expressed sequence tags (ESTs) mapped to the short arm of wheat homoeologous group 1 were downloaded from a public database. ESTs and mature transcript sequences of nine species from the Poaceae family were BLASTed to perform comparative analysis. ESTs selected using the BLAST tool were used for primer design. The target sequences of primers were expected to exist in most species of the Poaceae family, and therefore, cross-species primers were designed. Amplicons obtained using these cross-species primer pairs were sequenced in the 1BL.1RS near-isolines (‘OK91G113’ [1BL.1RS] and ‘OK91G114’ [non-translocation]), ‘Chinese Spring’ and ‘Petkus’ rye (1RS donor for 1BL.1RS translocations). Through in silico analysis and primer validation, we were able to develop four 1RS-specific markers and these markers were confirmed with analysis involving 15 1RS translocation lines.
    No preview · Article · Aug 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: The flowering responses of two Australian native Asteraceae species, Rhodanthe floribunda and Pycnosorus thompsonianus, to photoperiod and temperature were investigated to facilitate the manipulation of floral initiation and development. Plants were grown at 20/10 °C or 30/20 °C (day/night) under short day (SD: 11 h light) or long day (LD: 16 h light) in environment-controlled greenhouse bays in 2009 and 2010. LD advanced flowering by about 15 days and anthesis by 13 days in R. floribunda, and by 12 days and 15 days, respectively, in P. thompsonianus. Rhodanthe floribunda grown under cool temperatures (20/10 °C) produced 30% more inflorescences than the plants grown under warm temperatures (30/20 °C). Pycnosorus thompsonianus under LD produced more than double the number of inflorescences per plant than under SD (79.8 vs 33.7) regardless of temperature regimes. Both species are facultative LD plants. This knowledge is useful to regulate flowering of these ornamental plant species for potential commercialisation.
    No preview · Article · Aug 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: Somatic embryogenesis is a promising approach for plantlet regeneration. In order to establish a high-frequency plantlet regeneration system of onion in vitro, we used mature zygotic embryos as experimental material to improve the culture protocol. The results showed the highest induction rate of embryogenic callus (91%) was found when the NH4+/NO3– ratio in Murashige and Skoog (MS) medium was adjusted to 30/30 mM/mM. Well-proliferated embryogenic calli were observed in a 3 L airlift balloon-type bioreactor. During bioreactor culture, the continuous immersion culture was better. Inoculation density of 5 g/L and 0.1 vvm (air volume/culture medium volume per min) air volume were optimal for embryogenic callus proliferation. In addition, to obtain mature somatic embryos, the effects of sucrose and thiamine (VB1) were examined. Results showed that 20 g/L sucrose favoured somatic embryo maturation. When the VB1 concentration in normal MS medium (0.1 mg/L) was increased to 10 mg/L, the rate of somatic embryo germination reached 93.3%. When the mature somatic embryos were inoculated in MS medium without plant growth regulators, whole plantlets regenerated after 15 d of culture. During plantlet acclimatisation, the maximum survival rate (93.8%) was found in the substrate of 1/2 vermiculite and 1/2 perlite.
    No preview · Article · Aug 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: A polymerase chain reaction (PCR) assay was developed that amplified a 170-bp fragment of the intergenic spacer region of Sclerotinia sclerotiorum, the cause of white mould. Sensitivity was 10 S. sclerotiorum ascospores per DNA extraction (0.2 ascospores per PCR reaction). The presence of soil did not affect sensitivity at 50, 100 and 500 ascospores/DNA extraction, but reduced sensitivity at 25 and 10 ascospores/DNA extraction by 10% and 30%, respectively. The assay did not amplify DNA of Botrytis cinerea but detected S. minor and S. trifoliorum. Utility of the test for detection of S. sclerotiorum ascospores in bean fields was demonstrated using rotating impaction samplers over two seasons. The use of the test in combination with an impaction sampler may provide benefits in time, sensitivity and specificity compared with visual identification and enumeration of spores from traps only. This system may provide an opportunity to schedule fungicides during periods of inoculum presence for disease management.
    No preview · Article · May 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: Resveratrols and flavonoids have important beneficial roles in plants and to humans. The grape family (Vitaceae) is one of several families that can biosynthesise both resveratrols and flavonoids. Previous research has shown that UV-C may induce the biosynthesis of resveratrols in the fruit of grape. But little is known about the UV-C-induced biosynthesis of resveratrols and flavonoids in grape leaves. This study demonstrated that the biosynthesis of resveratrol in grape leaves strongly increased in response to UV-C irradiation. The largest contribution to total resveratrols was trans-resveratrol. The expression of related genes, including PAL, C4H, 4CL and STS, increased and peaked 6-12 h after treatment, earlier than the peak of total resveratrol. In contrast, total flavonoid content and the expression of the key gene CHS was not affected by UV-C radiation, staying at a low level after UV-C irradiation. In summary, there is a differential response to UV-C radiation for the biosynthesis of stilbenes and flavonoids in grape leaves.
    No preview · Article · May 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: Resveratrol is well known for its strong antioxidant properties. To accelerate research on resveratrol metabolism and to evaluate the genetic potential for breeding, the stilbenoid contents of four tissues (leaf and berry skin, flesh and seed) were examined in 21 accessions of six wild Chinese grapevine species (Vitis quinquangularis, V. romanetii, V. piasezkii, V. shenxiensis, V. amurensis and V. davidii). Resveratrol derivatives in V. quinquangularis, V. romanetii, V. piasezkii and V. shenxiensis are reported for the first time. Three kinds of stilbenoid (trans-resveratrol, cis-piceid and trans-piceid) were detected in the berry skins, flesh, seeds and leaves but cis-resveratrol was found to be absent. Stilbenoid content was predominantly affected by genetic background and by tissue type. In most accessions, berry skins produced the highest total stilbenoid, followed by leaves, seeds and flesh. As a proportion, cis-piceid was the major stilbenoid component in berry skins, seeds and leaves, whereas trans-piceid was the major component in the flesh.
    No preview · Article · Mar 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: Tomato potato psyllid (TPP; Bactericera cockerelli) is a serious pest of solanaceous crops in New Zealand. Control of TPP is currently dominated by synthetic biocides, although this method is curative and does not always prevent transmission of TPP-vectored plant diseases. This study evaluated mesh crop covers as non-chemical alternatives for controlling TPP in potato crops. Over two growing seasons in Canterbury, New Zealand, potatoes growing under mesh covers were found to have reduced numbers of TPP nymphs and adults, increased tuber size, increased overall yield and enhanced storage potential compared with uncovered plots. There was also a slight reduction in potato blight spores under mesh, and the actual occurrence of blight was slightly reduced in one trial. The results of this study indicate that mesh crop covers could provide a viable option for potato growers who wish to protect their crops from TPP without using chemical insecticides.
    Preview · Article · Mar 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: Extending the storage potential of feijoa would enable export to new markets. This work investigates the effect of combinations of 1-methylcyclopropene (1-MCP) and reduced oxygen atmospheres at 4 °C on feijoa quality. After harvest, feijoa were treated at 20 °C with 500 nL L−1 for 3 h or 1000 nL L−1 for 12 h of 1-MCP and air (as a control). Subsequent storage conditions at 4 °C were either: 2 kPa O2 and 0 kPa CO2; 5 kPa O2 and 0 kPa CO2; or air (as a control). Fruit were subsequently assessed fortnightly for up to 10 weeks. 1-MCP treatment was found to have no impact on delaying deterioration during storage. Reduced oxygen atmospheres delayed loss of firmness and titratable acidity during storage. However, after 4 weeks of storage, surface injury was most severe in the 2 kPa O2 treatment. Further research on extending storage life of feijoa is required.
    No preview · Article · Mar 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: Photosynthetic rate and the kernel-filling process are two crucial determinants of kernel yield in cereal crops. In the present study, the dynamic photosynthetic rates (Pn), kernel-filling characteristics, and kernel-filling rate and duration of five big-spike wheat lines (Triticum aestivum; 2005, 2026, 2037, 2038 and 2040) were compared with a control multiple-spike cultivar (Xi'nong 979) in 2010–11 and 2011–12. The 1000-kernel weight of the upper, middle and basal parts of the spike experienced a ‘slow-fast-slow’ pattern of growth from flowering to maturity. The big-spike lines had greater dry matter accumulations than the control cultivar 46 days after flowering, and also had higher kernel-filling rates in the basal part of the spike during the late growth period and greater kernel weights in the middle part of the spike throughout the entire kernel-filling process. The kernel-filling rates of the different parts of the spike during the three kernel-filling stages were ranked in the order of V2 (rapidly increasing kernel-filling stage) > V3 (slowly increasing kernel-filling stage) > V1 (moderately increasing kernel-filling stage). The mean Pn for each of the big-spike lines was lower than that of the control cultivar. These results indicate that the plumpness, size and weight of kernels produced by the big-spike lines can likely be increased by simultaneously increasing the photosynthetic rate and the kernel-filling duration during the late kernel-filling stage.
    No preview · Article · Mar 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: The changes in endogenous abscisic acid (ABA) content during ‘Hanagosho’ persimmon (Diospyros kaki Thunb.) development and maturation, as well as the effects of ABA, nordihydroguaiaretic acid (NDGA), 1-methylcyclopropene (1-MCP) application and polyethylene film package treatment on detached young fruit during fruit softening and senescence were investigated. The results showed that the ABA content in both peel and pulp peaked at 30 and 140 days after full bloom (DAFB). Moreover, the ABA content in peel at 30 and 140 DAFB was 17 and 29 times higher than in pulp, respectively. Dehydration in detached fruits induced the production of ABA and ethylene, which further led to fruit softening, and during this process ABA peaked earlier than ethylene. Expressions of the ethylene biosynthesis gene DkACS2 and ethylene oxidase gene DkACO1 were increased by the ABA treatment and their expression peaks also appeared earlier. However, expressions of DkACS2 and DkACO1 were down-regulated by the application of NDGA and 1-MCP, and their expression peaks were delayed. The peak time of 9-cis-epoxycarotenoid dioxygenase genes (DkNCED1) expression was not advanced under ABA, NDGA and 1-MCP treatments. In package-treated fruits, expressions of DkNCED1, DkACS2 and DkACO1 were significantly down-regulated and their expression peaks were delayed. In conclusion, we propose that dehydration could induce the expression of DkNCED1 and trigger ABA biosynthesis, while ABA could induce the expressions of DkACS2 and DkACO1, which initiates the biosynthesis of ethylene, consequently accelerating fruit softening and ripening.
    No preview · Article · Jan 2015 · New Zealand Journal of Crop and Horticultural Science
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    ABSTRACT: An experiment was conducted to investigate the effects of deficit irrigation on yield and tree growth of young apricot trees (Prunus armeniaca L. cv. Ninfa) during three growing seasons with three irrigation intervals (7, 14 and 21 days) and five irrigation levels based on reduction coefficients (Kcp) of class A pan evaporation (0.0, 0.25, 0.50, 0.75 and 1.00). Growth and yield variables such as trunk diameter, mean branch length, volume of tree, total number of fruit, mean fruit weight, total fruit yields of trees, evapotranspiration and water use efficiencies were determined. While the irrigation interval treatments had significant effects on trunk diameters and branch lengths of the trees, the irrigation level treatments significantly affected all the tree growth variables. Variation in irrigation level also affected yield, with yield and fruit size increasing as irrigation increased up to at least 0.75 of pan evaporation. The treatment with 25% water deficit and a 14-day irrigation interval is suggested as the most suitable irrigation strategy for young apricot trees under a Mediterranean climate.
    No preview · Article · Jan 2015 · New Zealand Journal of Crop and Horticultural Science