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Issue:
The Physiological Study on the Effects of Defoliationon Maize Kernel Development
Author(s):
Zhang Fenglu
,
Cui YanhongWang Zhimin
,
Zhao Ming
,
Wang Shuan
Pages:
16
-
19
Year:
1999
Issue:
3
Journal:
JOURNAL OF AGRICULTURAL UNIVERSITY OF HEBEI
Keyword:
玉米
;
去叶
;
籽粒发育
;
败育
;
Abstract:
以玉米杂交种0425为材料,在授粉后第2天进行去叶处理,测定了处理后果穗中部和上部籽粒在籽粒形成期的粒重、呼吸、可溶性糖含量及乙烯释放量的变化。结果表明,不同程度去叶处理都影响了籽粒的发育,造成籽粒败育率的升高。相对于穗粒数而言,粒重的变化较小。处理明显降低了上部籽粒的呼吸强度及蔗糖浓度水平,同时也刺激了籽粒内源乙烯代谢。研究认为,去叶处理后顶部籽粒乙烯释放量的增加、呼吸强度及糖代谢活性降低与籽粒败育密切相关。
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