THAYYIL Pradeepkumar

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• PhD(Horticulture)
• Head of Department at Kerala Agricultural University

Yellow Vein Mosaic Disease (YVMD), caused by begomovirus, represents the most detrimental threat to okra cultivation worldwide, significantly compromising yield, productivity and quality. As chemical interventions offer inadequate and often impractical control, the development of resistant or tolerant cultivars stands as the most practical long-ter...

Due to the growing population, urbanization, and industrialization, agricultural land has become limited, which increases the potential for aquaponics to improve food security. Aquaponics is an innovative and quickly growing sustainable farming technology that merges aquaculture (fish farming) with hydroponic systems (soil-less culture) to cultivat...

The present study was conducted under naturally ventilated polyhouse conditions at Department of vegetable science, College of Agriculture, Kerala Agricultural University, Vellanikkara, Thrissur, during the period of 2023-2024. Eleven gynoeciousparthenocarpic cucumber lines were evaluated, 747 with the leading private sector variety Sania as a chec...

Bitter gourd F1 hybrids, Prajani and Pragathi were developed at Kerala Agricultural University, trichur exploiting gynoecious technology. Both hybrids are subgynoecious in nature which produces more number of female flowers. They are high yielding and unique in quality and shape compared to hybrid varieties currently available in the market. Prajan...

Watermelon is a popular and widely consumed fruit that is thirst-quenching and nutritious, containing abundant health-promoting phytonutrients, minerals, and antioxidants. The present study assessed the nutritional potential of twenty watermelon genotypes with different flesh colours, such as red, pink, orange, yellow, and white. This study was con...

Protected cultivation is a transformative agrotechnology offering enhanced yield, quality, and resource efficiency. Pollination, a critical determinant of crop productivity, faces unique challenges in controlled environments, necessitating innovative strategies. This review highlights various pollination techniques, including manual, mechanical, an...

Prospect of in vitro seed culture in vanilla is discussed

Report on the softwood grafting of camphor (Cinnamomum camphora F.) on to cinnamon (Cinnamomum verum Presl) Rootstock.

Study on diversity of ridge gourd in South India and the extent of variability which can be exploited for genetic improvement programme in luffa.

Scope of growing seedless watermelon as a value added fruit vegetable for poly house cultivation is discussed.

Report on performance of F1 hybrid involving male sterile line in ridge gourd (Luffa acutangula L (Roxb).)

Scope of introducing F1 hybrids involving gynoecious line in cucumber under protected cultivation is discussed.

Standardization of protocol for the isolation and amplification of black pepper DNA using random decamer primers is discussed.

Discuss the standardization of multiplication media for in vitro culture of vanilla

Procedure followed for maintenance breeding of public sector vegetable varieties by Kerala Agricultural University in Kerala.

Details on potential of underutilized horticultural crops of hill region and their future scope

Report on new Source of male sterility in ridge gourd Luffa acutangula (L.) Roxb. and its maintenance through in vitro culture.

Potential of development of hybrids through heterosis breeding using male sterility in ridge gourd.

Narration on biodiversity of indigenous tropical vegetables.

Report on induction of seedlessness in diploid watermelon genotypes by gamma irradiation of pollen.

Influence of important weather parameters, viz, temperature and rainfall on the yield of coffee and black pepper in the high ranges of Kerala.

Influence of weather parameters such as temperature and rainfall on the yield of robusta coffee (Coffea canephora L) in the highranges of Kerala.

Scope of Horticulture-Emerging Opportunities

Protocol for induction of variability in Vanilla through in vitro mutagenesis.

Comparative Performance of tomato genotypes under polyhouse and open condition in highrange of Kerala

REsult of Evaluation of Parthenocarpic Cucumber (Cucumis Sativus L.) Hybrids under Protected Structure in Tropical Climate of Kerala

Protocol for In Vitro Plant Regeneration of Parthenocarpic Cucumber (Cucumis sativus L.) Genotypes

Performance of high yielding ginger genotypes in Wayanad, Kerala as a model for changing hill horticulture production system

Importance of Horticulture for healthcare and Wellness.

Breeding strategies followed in genetic improvement of chilli

Induction of polyploidy in watermelon

Impact of climate change in horticulture

Procedure for developing yellow fleshed seedless watermelon

Paper on evaluation of Carrot cultivars in the high ranges of Kerala.

Compilation of research work done on vegetable crops at Kerala Agricultural University for the last 50 years

Major findings derived from the PG work of Vijeeth Hegade on male sterility n dge gourd

Genetics and breeding procedures practiced vegetable crops

Scientific crop husbandry to be adopted for cultivation of vegetable crops for producing poison free vegetables. Text in malayalam

Cultivation practices for growing vegetables in home garden

Botany and cultivation of potato yam

Cultivation of chilli

Botany and agronomy of Giant granadilla

Participatory management strategy for conserving indigenous mango germplasm

Breeding principles and procedures to be adopted for genetic improvement of vegetable crops

Text book on genetics and breeding of vegetable crops

Text book for students and faculties about breeding and genetics of vegetable crops

Popular mango cullivars are maintained in the field gene bank of North Kerala at College of Agriculture, Padannakkad, Regional Agriculture Research Station, Pilicod and District Agriculture Farm Karimbam. Varieties such as Alphonso, Kalappady, Banganappally and Banglora are popular among farmers. Irregular bearing, lack of colour, presence of fibre...

Potential of microgreens and sprouts in in addressing nutritional challenge

Genetics and agronomy of ridge gourd and smooth gourd

Scope of horticulture as a science and profession in India is discussed

Production protocol for organic spices

Good agricultural practises to be followed in India

A healthy living primarily depends on the food we consume, and it should be capable of providing the proportionate nutrients for supporting a balanced diet. Nowadays, food consumption of people is showing a changing pattern from the traditional nutrient-rich diets to processed, energy-dense and micronutrient-poor foods, which are the main reasons b...

Exploitation of male sterility in Chilli offers an efficient and strategic approach to maximizing heterosis for hybrid development. Aim: The present research investigates combining ability, per se performance and gene action in chilli by using CGMS lines through L×T mating design. Methodology: Combining ability was assessed using a Line × Tester ma...

The F4 population comprising of 92 plants descended from the cross of semi-trailing, medium-long podded, low yielding cv. Kanakamony [Vigna unguiculata (L.) ssp. cylindrica] with pole type, long podded, high yielding cv. Sharika [V. unguiculata. ssp. sesquipedalis] was used for mapping the yield-related traits in vegetable type cowpea. Using 30 pol...

Piriformospora indica is a unique and versatile fungal root endophyte that colonizes a wide range of plant species, and promotes growth, early flowering and yield in addition to enhanced tolerance to abiotic and biotic stresses. The performance of P. indica-colonization in water melon was evaluated in two improved, seeded watermelon varieties viz.,...

The study aimed to assess the degree of association between the yield and its various contributing attributes in chilli and to determine the path through which each character is contributing towards yield. Thirteen different characters recorded from ninety-four genotypes in chilli were used for estimating the correlation and path coefficient analys...

Eggplant (Solanum melongena L.) is a widely cultivated vegetable in India with enormous variability. Recent molecular techniques revealed three closely related but distinct Solanum species (S. melongena, S. incanum and S. insanum), with the Indian subcontinent being a domesticated centre. Spontaneous hybridization between S. insanum and S. melongen...

Eggplant is considered as a prominent vegetable crop for its high amount of mineral content and widely cultivated in tropical and subtropical regions. The crop is susceptible to many diseases and one of the most harmful pathogens affecting eggplant production at global level is Ralstonia solanacearum, an aerobic non-spore-forming, Gram-negative, so...

An investigation was conducted into how the beneficial fungal root endophyte Piriformosopra indica impacts the growth and physio-biochemical attributes of two watermelon varieties, Sugarbaby and Thar Manak under varying water conditions: well-watered (75% field capacity) and water-stressed (35% field capacity). Piriformosopra indica has stimulated...

In the present scenario of adverse climatic conditions existing all over the world, protected cultivation stands as the most suitable way to maintain quality and increase the productivity of vegetable crops. Cultivation under protected structures ensures better yield compared to open field conditions and it also helps in year-round cultivation of m...

The objective of our study was the collection and characterization of germplasm of different species of cucurbitaceae followed by its evaluation for drought tolerance. Characterization of two species of Luffa (9 genotypes), two species of Cucumis (12 genotypes), one species of Lagenaria (2 genotypes), one species of Cucurbita (2 genotypes), one spe...

Haploids play a crucial role in plant breeding as they contain only one set of chromosomes, facilitating the rapid development of homozygous lines. Parthenogenetic haploids have been successfully produced using the irradiated pollen technique. Embryo rescue facilitates the development of an underdeveloped or lethal embryo into a viable plant. In...

One hundred and thirty five chilli landraces belonging to Capsicum annuum, C. chinense and C. frutescens species were analyzed for 20 unit characters. Temporal and spatial gene expression patterns of anthocyanin pigmentation and pubescence were analyzed which revealed species specific fixation of alleles and differential response of each species to...

Haploids play a crucial role in plant breeding as they contain only one set of chromosomes, facilitating the rapid development of homozygous lines. Parthenogenetic haploids have been successfully produced using the irradiated pollen technique. Embryo rescue facilitates the development of an underdeveloped or lethal embryo into a viable plant. Inbre...

Cucurbits constitute the largest group of fruit vegetables, are widely distributed, and are consumed for dessert as well as vegetable purposes in tropical and subtropical parts of the world. In major cucurbitaceous vegetables, hybrid technology is exploited to increase productivity and to ward off various stresses. Furthermore, an increase in the c...

The paper mapped the webinar content to evaluate its influence on participants' progress in cognitive learning on synchronous online platforms that facilitated a multidimensional structural learning process. A quasi-experimental research design was followed in analyzing the transcripts recorded from the three-day academic webinar attended by 630 pa...

Sensory evaluation among the consumers is inevitable before releasing a variety of bitter gourd as the local preference for different traits varies. Hence in the present study, sensory attributes, nutritional potentials, and shelf life of six bitter gourd hybrids and their parents were examined. The varieties used for the experiment include three m...

Application of Heat Susceptibility index for detecting heat tolerant genotypes of tomato

Impact of temperature on growth, flowering and yield in tomato (Solanum lycopersicon L)

Thirty-four tomato genotypes from different geographical locations were evaluated for genetic diversity and screened for bacterial wilt (BW) caused by Ralstonia solanacearum. Results revealed that plant height, fruits per cluster, fruit weight, fruit diameters, locules per fruit, fruit firmness, yield per plant, and quality parameters exhibited hig...

Investigation on development of hotset bacterial wilt resistant F1 hybrids of tomato (Solanum lycopersicon L)

Study on Correlation and reproductive traits in tomato for identification of hotset genotypes

Book entitled 'Vegetable Crops' incorporated the latest information on area, production and productivity of important vegetables at the national and international level and scientific crop production practices of more than 70 vegetables right from nursery to marketing. Classification of vegetables based on their cultural requirement is followed for...

Cucurbitaceous vegetables are predominantly cultivated during summer months in tropical and sub-tropical regions around the globe. Cucurbits play a significant role in ensuring food security and nutrition of marginalized communities in these areas. The crop is impacted by various abiotic stresses limiting the sustainable production. Shallow feeder...

The paper introduces the context of the study by examining the challenges of hidden hunger arising from the overemphasis on protein-carbohydrate dietary sources in the agricultural and food policy of India. In this setting, the vegetable development program (VDP) introduced at the national level to improve household access to vegetables across the...

A healthy living primarily depends on the food we consume, and it should be capable of providing the proportionate nutrients for supporting a balanced diet. Nowadays, food consumption of people is showing a changing pattern from the traditional nutrient-rich diets to processed, energy-dense and micronutrient-poor foods, which are the main reaso...

A genetic map spanning 1287.99 cM across 11 linkage groups was constructed following the segregation of microsatellite markers in an F2:3 mapping population generated by crossing high yielding cultivar Priyanka (M. charantia var. charantia) and M. charantia var. muricata accession IC634896. QTLs were identified for 24 traits including yield-contrib...

Book entitled 'Vegetable Crops' incorporated the latest information on area, production and productivity of important vegetables at the national and international level and scientific crop production practices of more than 70 vegetables right from nursery to marketing. Classification of vegetables based on their cultural requirement is followed for...

"Good quality seed is the most important component in production technology of crops. Farmers in India are aware of the importance of good quality seeds and trade liberalization has resulted in flourishing of vegetable seed industry in India. Seed production has become a lucrative business for the private sector which is evidenced from mushrooming...

Background: Even though the bitter gourd hybrids are shown to have significant heterosis for many of the economic traits, processes such as manual bagging and hand pollination make the hybrid seed production labour-intensive. Use of gynoecious line as female parent makes hybrid seed production more economical. This work was performed with the obje...

New gynoecious bitter gourd line, KAU-MCGy-101 identified from Kerala Agricultural University, India, was morphologically characterized. Silver thiosulphate (STS) was used for altering the sex expression of gynoecious line. STS induced hermaphrodite flowers in gynoecious plants and maximum number of hermaphrodite flowers was in plants receiving...

An experiment was designed to fi nd out the extent of heterosis in bitter gourd using gynoecious line, KAU-MCGy-101 and three monoecious lines viz., Preethi, Priyanka, and MC133. Hybrids were generated by both direct and reciprocal crosses. All the hybrids exhibited earliness in terms of days to first female flower opening, node bearing first femal...

Potential of natural pollinators and manually assisted pollination for producing F1 hybrid seeds of ridge gourd hybrid ‘KRH 1’ was evaluated under open field condition for two seasons by growing male sterile line (KAU-LA-MS-101) and monoecious male fertile line (LA-102) in alternate rows. Investigation was carried out at the Department of Vegetable...

Roadmap for vegetable development in Kerala for five year plan-2021-2026

Genome editing technologies are once again in lime light after the issue of the office memorandum dated 30th March 2022 by the Ministry of Environment, Forest and Climate change, Government of India exempting transgene free genome edited plants falling under categories of SDN1 and SDN2 from the provisions of the rules 7-11 of GSR 1037 (E) dated 5th...

Okra is one of the most important vegetable crops grown all over the world. The production of okra is constrained by a viral disease, yellow vein mosaic disease (YVMD) which causes huge losses to okra cultivators. Even though many resistant varieties were released in the past, they had become susceptible to the disease. Thirty four genotypes of okr...

The landraces of Capsicum belonging to four major cultivated species, collected from various agro-ecological zones (AEZ) of Kerala were evaluated based on the ascorbic acid content and natural incidence of pests and diseases. Association of ascorbic acid was checked with 80 different characters comprising 40 qualitative and 32 quantitative characte...

The present study was undertaken in the Department of Olericulture, College of Horticulture, Thrissur, Kerala. The objectives of the study were to identify an ideal hybrid of tropical cabbage for the plains and to study the feasibility of cabbage cultivation in on and off- seasons. The experiment was laid out in a Randomized Block Design with four...

The study's goals were to find the perfect tropical cabbage hybrid for the plains and to examine whether it was feasible to grow cabbage both during the growing season and outside of it. The experiment was laid out in a Randomized Block Design with four replications. Four F1 hybrids namely NS183, NS43, NS35 and Disha were used for the study during...

Kerala Agricultural University and Indian Society of Vegetable Science jointly organized a National level Web Conference on “Challenges and opportunities in vegetable production in the warm humid tropics” during 11, 12 and 13th of November, 2020. More than 500 participants, including PG students, scientists, professors, progressive farmers and sele...

Bitter gourd, being a rich source of phytonutrients, holds a special value in dietary habits of the consumers. Genetic improvement of this crop by inclusion of wide array of genes through inter-specific and intergeneric breeding approaches is substantially important. Microsatellites are extensively used by breeders as a molecular tool for mapping a...