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辽宁水稻穗型指数品种间差异及其与产量和品质的关系
引用本文:徐正进,陈温福,张树林,张文忠,马殿荣,刘丽霞,周淑清.辽宁水稻穗型指数品种间差异及其与产量和品质的关系[J].中国农业科学,2005,38(9):1926-1930.
作者姓名:徐正进  陈温福  张树林  张文忠  马殿荣  刘丽霞  周淑清
作者单位:沈阳农业大学水稻研究所/农业部作物生理生态与遗传育种重点开放实验室,沈阳,110161
基金项目:国家自然科学基金(30370866)和农业部“948”项目资助.
摘    要: 以辽宁省近年来育成的水稻品种为试材进行研究,结果表明,穗部性状和品质性状均存在显著的品种间差异,增加穗数和千粒重、减少每穗粒数有利于提高加工品质,提高结实率特别是二次枝梗结实率有利于提高外观品质,二次粒率高对加工品质、外观品质和营养食用品质均有负面影响。提出用穗型指数(PTI,二次枝梗粒数最多的一次枝梗所在穗轴节位与一次枝梗数之比)表示二次枝梗籽粒在穗轴上分布特点,试材PTI分布在0.29~0.61之间,据此将试材划分为二次枝梗籽粒上部优势型、中部优势型和下部优势型3种穗型,二次枝梗籽粒偏向穗轴中上部分布即PTI较大不但有利于提高结实性和产量,还有利于改善品质。

关 键 词:水稻  穗部性状  品质性状  穗型指数
收稿时间:07 21 2004 12:00AM
修稿时间:2004-07-21

Differences of Panicle Trait Index Among Varieties and Its Relationship with Yield and Quality of Rice in Liaoning
XU Zheng-jin,CHEN Wen-fu,ZHANG Shu-lin,ZHANG Wen-zhong,MA Dian-rong,LIU Li-xia,ZHOU Shu-qing.Differences of Panicle Trait Index Among Varieties and Its Relationship with Yield and Quality of Rice in Liaoning[J].Scientia Agricultura Sinica,2005,38(9):1926-1930.
Authors:XU Zheng-jin  CHEN Wen-fu  ZHANG Shu-lin  ZHANG Wen-zhong  MA Dian-rong  LIU Li-xia  ZHOU Shu-qing
Institution:Key Laboratory of Crop Physiology, Ecology, Genetics and Breeding, Ministry of Agriculture / Rice Institute of Shenyang Agricultural University, Shenyang 110161
Abstract:Using rice varieties bred recently in Liaoning as materials in this study.The results showed that the characters of panicle and characters of quality were significantly different among different varieties.It was advantageous to increase processing quality by increasing numbers of panicle and 1000-grian weight,and it was advantageous to improve the appearance qualities by increasing seed setting rate or that of secondary branch especially.The effects of high seed setting rate of secondary branch on processing qualities and appearance qualities or eating qualities were negative.It was put forward that using panicle trait index (PTI,the ratio between the number of axis internode whose number of grains of secondary branch was almost the primary branches and number of primary branch) to show the distribution characteristic of the number of grains of secondary branches on the axis.The PTI of these materials distributed between 0.29 and 0.61.These materials were classified into superior-on-the-upper-part type (SUT) and superior-on-the-middle-part type (SMT) or superior-on-the-lower-part type (SLP) according to the PTI.When the number of grains of secondary branches were superior on the middle or upper part,in other words the number of PTI was bigger,it is advantageous to increase not only the seed setting rate and yield but also improve quality.
Keywords:Rice  Character of panicle  Quality character  Panicle trait index
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