不同成熟期板栗品种(系)种子发育期主要营养物质与内源激素含量的动态变化

摘要

To explore the maturity mechanism and the method of regulating mature period of chestnuts,the starch, soluble sugar, soluble protein, Vc, IAA, ZT, GA3, ABA and Eth of different mature period Chestnuts (0212, E two,0214,0206,0204 and E one) were measured and analyzed. The results showed that the change tendency of main nutrients'accumulation were analogous. The starch and the soluble sugar were accumulated greatly before maturation 20 ～ 30 d. The contents of starch, soluble sugar, soluble protein and Vc were showed that the early maturation varieties ＞ the middle maturation varieties ＞ the later maturation varieties. The other results showed that the decrease of IAA, ZT and GA3 and the increasing of ABA and Eth were beneficial to the accumulation of the starch, soluble sugar, soluble protein and Vc. IAA,ABA were the key factors, especially the IAA, for chestnuts nutrients accumulation, but the balance of all Endogenous Hormones were most important. And last, significant difference in maturation time of different chinese chestnuts were result from the different starting change days beforte maturation and the lasting times of endogenous hormones.%比较研究不同成熟期的6个板栗品种(系)种子发育期淀粉、可溶性总糖、可溶性蛋白质、Vc等主要营养物质和IAA,ZT,GA3,ABA,Eth等内源激素含量的变化规律及其关系.结果表明:板栗种子发育过程中,6个品种(系)各营养物质含量变化具有相似趋势,即淀粉、总糖均在种子成熟前20～30天开始大量积累,淀粉、总糖、蛋白质、Vc含量呈现早熟品种(系)>中熟品种(系)>晚熟品系的现象.IAA,ZT,GA,含量的减少和ABA,Eth含量的增加有利于板栗种子中淀粉、总糖、蛋白质、Vc的积累,其中内源IAA,ABA的含量对各营养物质的积累影响极显著(以IAA的作用更大);种子发育期内源激素含量的变化是导致板栗品种成熟期不同的重要原因.