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本文对不育系V_20A穗颈下节节间伸长的外部形态,居间分生组织细胞分裂的初始期、高峰期和细胞伸长期进行了较系统的观察研究,并对GA_3喷施的最佳时期、用量和对穗颈下节伸长与结实率的影响进行了初步的探讨,为提高制种产量提供了某些理论依据。
In this paper, the external morphology of internode elongation and the initial period, peak period and cell elongation phase of interspecific meristematic cell division of V_20A were systematically observed and studied. Period, dosage and the effect on elongation and seed setting rate of lower panicle neck section were discussed in order to provide some theoretical basis for improving seed production.