茄子种子发育过程中生理指标变化研究

[目的]研究茄子种子发育过程中生理指标的变化情况,为新品种种子快繁提供理论依据。[方法]自开花后15d起,每隔5d,取种测定茄子鲜干重、含水量及可溶性糖、淀粉、可溶性蛋白含量的变化,直至花后55d。[结果]茄子种子发育过程中含水量持续下降;在种子发育前期干物质迅速积累;花后第45天可溶性糖含量积累达到最高峰,随后缓慢回落;花后第35天开始,淀粉积累速度加剧,随后较缓上升;可溶性蛋白含量变化呈明显的双峰曲线,分别在花后第25、40天达到峰值,花后第40天后开始明显下降。花后第50天,茄子种子具备基本发芽力,此时可溶性糖、淀粉、可溶性蛋白含量和干物质积累均已经达到峰值或越过峰值。茄子各项指标与对照品种差异较显著,其有机物质积累水平均低于对照。[结论]花后50d茄子种子已经达到生理成熟度。

Study on the Changes of Physiological Indices of Eggplant Seeds in the Growth Period

[Objective] The research aimed to study the changes of physiological indices of eggplant seeds in the growth period and provide the theoretical basis for the fast propagation of new variety seeds. [Method] After 15 days after anthesis,the changes of fresh weight,dry weight,moisture content,soluble starch content,soluble sugar content and soluble protein content of the seeds were determined every 5 days. [Result] The moisture content of seeds was decreasing during the growth period. Dry matter accumulated rapidly in early development stage of seed. Soluble sugar content reached its peak on the 45th day after blooming,then began to decrease slowly. Starch accumulated rapidly on the 35th day after blooming,then began to increase slowly. Soluble protein content changes showed bimodal curves and appeared peaks on the 25th day and 40th day of the bloom stage,then began to decrease. The seeds of eggplant had the germination ability on the 50th day of bloom stage,soluble sugar,starch,soluble protein content and dry matter accumulation all reached their peak at this time. Different indices of eggplant had very significant difference with control cultivar,but its organitc matter accumlation level was lower than CK.[Conclusion] On the 50th day after blooming,the eggplant seeds reached their physiological maturity.