【摘 要】
：
“谷上谷”的植株外部形态和生育过程与普通谷没有明显的区别,但由于在穗分化中“谷上谷”的刚毛小穗原基较普通谷的刚毛原基伸长后顶端保持继续分化小穗的能力,从而形成了具
【机 构】
：
北京农业大学农学系,北京农业大学农学系,北京农业大学农学系
论文部分内容阅读
“谷上谷”的植株外部形态和生育过程与普通谷没有明显的区别,但由于在穗分化中“谷上谷”的刚毛小穗原基较普通谷的刚毛原基伸长后顶端保持继续分化小穗的能力,从而形成了具有刚毛顶端可结实的刚毛小穗这一特征。正在发育的刚毛小穗在其迅速伸长时分化较慢,当伸长到一定程度时即加快分化,缩短了与相邻的普通小穗分化所形成的差距。刚毛小穗在不同的发育程度上都可能发生退化,退化程度与环境条件有关,退化的部位以穗的基部和一级枝梗的基部比较严重。
There was no significant difference between the external morphology and growth process of the plants in “Gu Shang Gu” and the normal valley. However, the tip of the bristle spikelet of “Gu Shang Gu” The ability to form bristles with strong bristles on top. The developing bristle spikelets differentiate slowly when they grow rapidly, accelerate differentiation when they reach a certain extent, and shorten the gap formed with the adjacent common spikelet differentiation. The spikelets of bristles may degenerate in different developmental stages. The degree of degeneration is related to the environmental conditions, and the degenerated parts are more serious at the basal part and the primary branch of the spike.
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