中国农业科技导报Issue(1)：96-101,6.DOI:10.3969/j.issn.1008-0864.2013.01.16
杂交中稻库源结构对弱势粒灌浆结实的影响
Effects of Sink-source Structures on Filling of Superior and Inferior Spikelets of Mid-season Hybrid Rice
摘要
Abstract
Taking G46A/ 10 Zhi 12 and Neixiang 6A/ 10 Zhi 5 of mid-season hybrid rice combinations grown under 2 levels of nitrogen application as experimental material,this paper studied the effects of sink-source structures on the filling of superior and inferior spikelets. The results indicated that superior spikelets filled fast,and grain weight entered the slow increasing into growth period 10 ~ 15 days earlier than that of inferior spikelets. There were no of superior spike lets significant differences in filling rate between superior spikelets and inferior spikelets. Excessive nitrogen fertilizer application was not conducive to grain filling. “Source”shortage is the main reason for poor grain filling of inferior spikelets. The filling rate of inferior spikelets can reach or exceed the superior spikelets of the normal growth plants in filling rate,if the supply quantity of “source”is increased to a certain degree.关键词
杂交中稻/库源结构/强势粒/弱势粒/充实率Key words
mid-season hybrid rice/sink-source structures/superior spikelets/inferior spikelets/filling rate分类
农业科技引用本文复制引用
徐富贤,郭晓艺,张林,熊洪,朱永川,刘茂,周兴兵..杂交中稻库源结构对弱势粒灌浆结实的影响[J].中国农业科技导报,2013,(1):96-101,6.基金项目
国家粮食科技丰产科技工程项目(2011BAD16BO5-1) （2011BAD16BO5-1）
西南水稻创新体系建设项目 （）
四川省学术带头人培养基金 （）
四川省水稻育种攻关项目 （）
四川省财政推广项目资助 （）
