P. Tongumpai's research while affiliated with Kasetsart University and other places
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Publications (8)
The technique in producing off-season mango has been adopted in Thailand since 1986. Paclobutrazol, plant growth retardant, was used in combination with thiourea for producing as well as breaking of flower buds. The studies on the application methods showed that soil drenching of paclobutrazol is more effective for the induction of flowering in man...
Three year old mango trees, Mangfera indica L., cv. Nam Dok Mai, were treated with thiourea to induce bud break. Thiourea at 0.5 and 1% were sprayed until run-off on the leaves of mango trees when the leaves were at full expansion. Treated trees produced uniform terminal bud breaks within 14 to 16 days after treatment, while the controls broke buds...
Single and multiple foliar application of paclobutrazol at 1000 and 2000 ppm were applied to mango tree, Mangfera indica L. cv. Nam Dok Mai, in June to induce off- season flowering. The treated trees initiated flowering 29 to 41 days earlier than the controls. The amount of flowering shoots of all paclobutrazol treated trees was 2 times greater tha...
Five uniform mango trees, Mangfera indica L., cv. 'Khiew Sawoey' were drenched with 6g/tree paclobutrazol 16 days after leaf emergence. Terminal shoots of the treated and control trees were collected weekly for anatomical studies. Apical meristems of both control and treated trees slowly developed increasing amounts of leaf primordia and bud scales...
Citations
... Soil application of paclobutrazol induces precocious flowering in young trees and promotes early flowering in bearing trees (Kulkarni, 1988). Inflorescence becomes visible within 2.5 to 4 months after the application of paclobutrazol depending on cultivar (Junthasri et al., 2000). PP333 (paclobutrazol) enhances the flower and fruit production in mango (Anbu et al., 2002). ...
... Paclobutrazol has been commercially used throughout the tropics to control vegetative growth and stimulate flowering for several fruit crops such as apple (Zhu et al., 2004), pummelo (Phadung et al., 2011), apricot (Arzani and Roosta, 2004), and mango (Singh and Ram, 2000;Yaowara at el., 2017). In the recent years, many reports showed that application of PBZ by soil drenching or foliar spray to mango trees can cause reduction of vegetative growths, inhibits gibberellin biosynthesis, and induces water-stress tolerance as well as increases total non-structural carbohydrates (TNC) to induce flowering (Subhadrabandhu et al., 1997;Suranant et al., 1999;Gollagi et al., 2019). The application of flower induction is one of the key factors that may influence the growth, yield, and the quality of the mango trees. ...
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... A numbers of diverse chemicals that have growth regulating properties in plants have been tested for promoting/inhibiting flower production in mango in different countries (Chacko, 1991). It has been demonstrated that foliar spray of aqueous solutions of potassium nitrate (Sergent et al., 2000;Astudillo and Bondad, 1978) and Thiourea (Tongumpai et al., 1997;Nartvaranant et al., 2000) can induce flowering in certain varieties of mango. Besides increasing flowering rates, potassium nitrate can also advance the flowering and fruiting period of mango (Nagao and Nishina, 1993). ...
... Maximum toxicity was noted on inflorescence when only fungicides were applied followed by the combination of the fungicides with synthetic chemicals. Tongumpai et al. (1989) obtained similar findings, who observed that soil application of Cu(OH)2 resulted in a significant increase in flowering and slightly earlier flowering and literally reduced the inflorescence disease by its foliar spray of with potassium nitrate 8 weeks after the treatment. Our results are in accordance with (Ramírez and Davenport, 2010) reported that KNO3 sprayed plants produced the greatest number of inflorescences per plant. ...
![[object Object]](https://i1.rgstatic.net/ii/profile.image/279375690911780-1443619763973_Q64/Kanapol-Jutamanee-2.jpg)
... En mango 'Keitt' y 'Tommy Atkins' con sólo dos semanas en temperaturas inductivas (10/15 ºC), el PBZ redujo el número de días requeridos para floración, lo que indicó que el regulador complementó la necesidad de bajas temperaturas para la inducción floral (Yeshitela et al., 2004). En mango 'Khiew Sawoey', a los 104 y 112 días después de la aplicación de PBZ el 90 y 100 % de los brotes tratados florecieron, mientras que ninguna de las yemas control desarrolló flores (Tongumpai et al., 1996). Considerando lo anterior, el objetivo del presente estudio fue conocer el efecto de PBZ, P-Ca y temperatura en el proceso de iniciación y diferenciación floral del mango 'Ataulfo'. ...
... Normally flowering occurs in three flushes in the season. However, flowering process is controlled by several factors (Anonymous 2013, Haldankar and Parulekar 2013, Tongumpai et al. 1991. On a full grown mango tree, about 1000 panicles appear depending on the variety, canopy spread and tree vigour. ...
... The Pharma Innovation Journal http://www.thepharmajournal.com Similar kinds of results were observed by Kurian and Iyer (1993) [12] ; Khader (1991); Tongumpai et al. (1997) [24] ; Nartvaranant et al. (2000) [16] ; Jogdande and Choudhari, (2001) [8] ; Cardenas and Rojas (2003) [5] ; Sanjay and Jaynt (2003) [20] ; Yeshitela et al. (2004) [25] ; Patil and Talathi (2005) [19] ; Singh and Ranganath (2006) [22] ; [23] ; Kumari and Mankar (2008) [11] and Mistry and Patel (2009) [14] . ...
... Paclobutrazol (PBZ), a gibberellin inhibitor, exhibited its efficacy in regulating flowering in fruit crops. However, efficacy varies with climatic conditions, crop species, rate and methods of application (Nartvaranant et al., 2000). PBZ is commonly used in mango to bring regularity in bearing through flower induction (Upreti et al., 2013;Oliveira et al., 2017). ...
