[Effects of zinc and boron nutrition on balsam pear (Momordica charantia) yield and quality, and polyamines, hormone, and senescence of its leaves].
Field trial and physiological determination on the effects of zinc and boron nutrition on balsam pear (Momordica charantia) yield and quality and on polyamines, hormone, and senescence of its leaves showed that application of ZnSO4.7H2O and Na2B4o7.10H2O on Zn and B deficient soils could increase balsam pear yield and its contents of protein, Vc and 17 sorts of amino acids, especially the contents of essential amino acids for human body, but decrease the NO3(-)-N content. The reason was that Zn and B could increase polyamines (PAs), putrescine (Put), spermidine (Spd), spermine (Spm), indole acetic acid (IAA), gibberellic acid (GA3) and ascorbic acid (ASA) contents and superoxide dismutase (SOD), peroxidase (POD) and catalase(CAT) activities, and reduce malondialdehyde (MDA), abscisic acid (ABA) contents in leaves, which inhibited membrane lipid peroxidation. The results also showed that there was a significant positive correlation between yields and PAs, Put, Spd, Spm, GA3, SOD, POD, CAT, but a significant negative correlation with MDA and ABA contents in leaves. There was a significant positive correlation between MDA and ABA, but a significant negative correlation with PAs, Put, Spd, Spm, IAA, GA3, ASA, SOD, POD, and CAT.
Shi
Mutian
M
Key Laboratory of Ecophysiology and Genetic Improvement for Sugarcane, Ministry of Agriculture, College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China. smt0121@163.net
Cheng
Rukai
R
D000375:Aging; D015317:Biogenic Polyamines / Q000032:analysis*; D001895:Boron / Q000494:pharmacology*; D018556:Crops, Agricultural / Q000254:growth & development*; D008315:Malondialdehyde / Q000032:analysis; D029777:Momordica charantia / Q000737:chemistry / Q000254:growth & development*; D010937:Plant Growth Regulators / Q000032:analysis*; D018515:Plant Leaves / Q000737:chemistry*; D015032:Zinc / Q000494:pharmacology*
D015317:Biogenic Polyamines; D010937:Plant Growth Regulators; D008315:Malondialdehyde; D015032:Zinc; D001895:Boron