基于粳稻品种‘日本晴’的大穗大粒近等基因系评价

摘要

为了筛选出理想的穗形、粒形近等基因系,对以粳稻品种‘日本晴’为背景亲本、以大穗品系‘R1126’和大粒品系'TDX,为供体亲本构建的大穗、大粒株系进行了评价.结果表明:P01、P05、P09、P19和P20株系每穗粒数显著多于日本晴,而其他农艺性状与日本晴基本相当;G08和G09的粒重、粒长显著大于日本晴,而株高、穗长、每穗总粒数、结实率和单株粒重等性状与日本晴相当.这些株系是基于日本晴背景的理想大穗、大粒近等基因系,为后续的深入研究提供了基础材料.%A set of rice lines with large-panicle or large-grain were developed,which have the background parent of japonica rice variety Nipponbare,and the large-panicle line R1126 and the large-grain line TDX as the donor.In order to screen the ideal near-isogenic lines with different panicle size or grain size,thirty-three lines were evaluated.The results showed that the number of grains per panicle of P01,P05,P09,P19 and P20 lines were significantly higher than that of Nipponbare,while other agronomic characters were similar to those of Nipponbare.Grain weight and grain length of G08 and G09 were significantly higher than those of Nipponbare,while plant height,panicle length,total grains per panicle,seed setting rate and grain weight per plant were similar to those of Nipponbare.These lines,which with large-panicle or large -grain and based on the background of Nipponbare,were the ideal near-isogenic lines,and would provide the basic materials for further in-depth study.