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向日葵花盘分化形成期是决定花盘粒数的关键时期,研究和掌握花盘分化发育过程及其与外部形态特征的关系,以准确判断花盘分化发育进程,对于制订合理的栽培技术措施,正确运用水肥条件促进盘大粒多,以及调节杂交育种工作中的花期相遇,都是十分必要的。为此,我们于1981年在山西省农科院经济作物研究所对向日葵花盘分化形成过程进行了形态解剖学观察。现将观察结果初报如下:
The formation and differentiation of sunflower disk is the key period to determine the number of flower disk. To study and grasp the relationship between disk differentiation and development and its relationship with external morphological characteristics in order to accurately determine the developmental process of disk differentiation. To develop reasonable cultivation techniques and proper application of water and fertilizer It is very necessary to promote the large grain size and adjust the flowering period in hybrid breeding work. To this end, we conducted a morphological and anatomical observation of the formation and differentiation of sunflower disk in 1981 at the Institute of Economic Crops of Shanxi Academy of Agricultural Sciences. Now the first report of the observation is as follows: