文献类型：期刊文献

中文题名：水稻亚亚种间杂种优势利用的探讨

英文题名：STUDY AND DISCUSSION ON UTILIZATION OF SUBSUBSPECIFIC HETEROSIS IN RICE

作者：彭俊华[1];吴元奇[1];蔡镶贵[2];陈显维[2]

机构：[1]湛江农业专科学校农学系,湛江市524088;[2]四川省原子核应用技术研究所,成都市610066

年份：1995

卷号：13

期号：3

起止页码：270

中文期刊名：四川农业大学学报

外文期刊名：Journal of Sichuan Agricultural University

收录：CSCD_E2011_2012、CSCD

基金：蔡锡贵先生主持的"杂交水稻新组合选育"项目

语种：中文

中文关键词：水稻;亚亚种间;杂交种;配合力;杂种优势

外文关键词：PADDY; SUB-SUBSPECIFIC HYBRID; COMBINING ABILITY; HETEROSIS

中文摘要：将水稻中粳株系“02428”与籼型恢复系中间材料杂交，育成了几个含50％粳稻血缘的新恢复系。它们与籼型不育系配制的亚亚种间杂交稻，一般具有明显的大穗优势，每穗总粒数可达200粒以上，且结实率正常，生育期适中，只是分蘖力较弱。与显性早熟不育系“早显A”配制的杂交组合，穗粒数明显多于籼型迟熟组合汕优63和早熟组合汕窄8号；尽管生育期比汕窄8号短1．7－6．0天，但产量却高13．7－32．1％，且不低于汕优63。本文还考察了这些恢复系之F1代杂种优势的表现特点，粗略估计了其主要性状一般配合力相对效应值，讨论了亚亚种间杂种优势利用中的有关问题。

外文摘要：Three new restorer lines, D050, D084 and D091, with 50% of nuclear genetic matter from Japonica subspecies were developed by introducing the germplasm of wide-compatible Japonica line 02428 to Indica medium materials with fertility restoring genes, The sub-subspecific hybrids between Indica CMS lines and the 3 new restorer lines generally have significant heterosis in panicle weight, more than 200 spikelets/panicle which is much more than that of Shanyou 63 (the national late-maturing cleck), normal filled- spikelet percentage and acceptable growth duration, but weaker tillering capacity and less panicles. The sub-subspecific hybrids derived from CMS line Zaoxian A with dominant earliness and the 3 restorer lines were a few days earlier than Shanzhai 8 (tbe provincial early-maturing check) and more than 15 days earlier than Shanyou 63, but have much more spikelets/panicle than the checks, and have 13. 7-32.1, higher grain yield than Shanzhai 8. The general combining ability effects and heterosis of some F1 crosses for 9 characters were rougbly estimated, and the results iudicated that D084 was the best new restorer line. The concept of sub- subspecific beterosis, utilization potential of the restorer lines and the derived hybrids,and the key cultivation practices of the sub-subspecific hybrids were also discussed in the paper.