辽宁省杂交粳稻穗部特征及其与产量的关系分析  

Panicle Characteristics and Its Relationship with Yield of the Northern Japonica Hybrid Rice in Liaoning Province

作　　者：商文奇 马秀芳 吕桂兰 王先俱 李小婉 庞秀 王铮 SHANG Wen-qi;MA Xiu-fang;LV Gui-lan;WANG Xian-ju;LI Xiao-wan;PANG Xiu;WANG Zheng(Liaoning Rice Research Institute,Shenyang 110101,China)

机构地区：[1]辽宁省水稻研究所,沈阳110101

出　　处：《北方水稻》2025年第2期1-5,共5页NORTHERN RICE

基　　金：辽宁省科技特派团项目(2023020536-JH5/104);沈阳市中青年科技创新人才支持计划(RC200244);铁岭市科技共建(5072019)。

摘　　要：以7个辽宁杂交粳稻组合和2个常规粳稻品种为试材,分析了辽宁杂交粳稻穗部特征及其与产量的关系。结果表明,辽宁杂交粳稻属于中位优势穗型。杂交组合和常规品种之间一次枝梗数、上部、下部和总一次枝梗粒数的差异显著性表现不一。杂交组合的上部、中部、下部和总二次枝梗数及其粒数均大于常规品种,且二者之间上部和中部二次枝梗数以及上部二次枝梗粒数的差异达显著水平。杂交组合的产量高于常规品种,但与高产常规品种之间的差异不显著。回归分析结果表明,一次枝梗数、下部二次枝梗数、上部一次枝梗粒数以及中部和总二次枝梗粒数对杂交组合的产量有重要影响。通过适当增加一次枝梗数和二次枝梗总粒数,减少下部二次枝梗数和中部二次枝梗粒数优化穗部性状,有利于进一步发挥辽宁杂交粳稻的产量潜力。7 northern japonica hybrid rice combinations and 2 conventional rice varieties were used as test materials to analyze the panicle characteristics and its relationship with yield of the northern japonica hybrid rice in Liaoning province.The results indicated that the northern hybrid japonica rice in Liaoning province belonged to the superior part of distribution of the secondary branch grains on the middle panicle.The significance of the difference varied in the upper,lower,and total grain number of the primary branch between the hybrid combinations and the conventional varieties,as well as the primary branch number.The upper,middle,lower,total secondary branch number and the grains on these branches of the hybrid combinations were greater than that of the conventional varieties,and the difference of the upper and middle secondary branch number,and the grain number of the upper secondary branches between them reached the significant level.The yield of the hybrid combinations was higher than that of the conventional varieties,but the difference between the hybrid combinations and the high yield conventional variety was no significant.The results of the regression analysis showed that the primary branch number,the lower secondary branch number,the grain number of the upper primary branches,the middle and total secondary branches had the important impact on the yield of the hybrid combinations.By appropriately increasing the primary branch number and the total grain number of the secondary branch number,and reducing the lower secondary branch number,and the grain number of middle secondary branches to optimize the panicle traits would be beneficial for further realizing the yield potential of the northern japonica hybrid rice in Liaoning province.

关 键 词：辽宁杂交粳稻 穗部特征 产量 回归分析 

分 类 号：S511.035.1[农业科学—作物学]