两系亚种间杂交水稻籽粒灌浆特性的初步研究(简报)  

PRELIMINARY STUDY ON GRAIN-FILLING CHARACTERISTIC OF THE INTERSUBSPECIFIC HYBRID RICE

作　　者：贺浩华[1] 刘宜柏[1] 饶治祥 潘晓云 

机构地区：[1]江西农业大学作物育种研究室

出　　处：《江西农业大学学报》1993年第A01期79-82,共4页Acta Agriculturae Universitatis Jiangxiensis

摘　　要：本试验结果表明:亚种间杂交稻比品种间杂交稻灌浆达到峰值的时间要长、峰值要小、启动灌浆晚;亚种间杂交稻强、弱势粒异步灌浆特性比品种间杂交稻更明显.亚种间杂交稻籽粒含水率大于品种间杂交稻;籽粒灌浆速率最大时,杂交稻籽粒含水率为50%～57%,但强势粒该值大于弱势粒.杂交稻灌浆的临界含水率为25%左右.另外,对提高亚种间杂交稻籽粒灌浆能力进行了讨论.Using interspecific combination Xieyou 2374 and intersubspecific combinationW6154S/029,the grain-filling characteristic of these was studied,the results were as fol-lows:(1)In comparison with interspecific combination,the peak value of grain-filling issmaller in intersubspecific combination,the time of the peak value reaching grain-filling islonger,the starting grain-filling is late.The asynchronous grain-filling characteristic of thestrong and the weak grains of intersubspecific combination is more obvious.(2)The grain water content of intersubspecific combination is larger than that ofinterspecific combination,Reaching the peak value of grain-filling rate,the grain watercontent is 50%～57% in two type hybrid rices,but strong grain of 52%～57%,weak grainof 47%～54%.The filling of grain ended when the grain water content was 25%.It mightbe true that 25% grain water content was the critical level for grain filling in hybrid rice,butcritical grain water content of the strong grain was 20%,the weak grain of 30% or so.

关 键 词：亚种间 籽粒灌浆 杂交稻 

分 类 号：S511.101[农业科学—作物学]