杂交水稻茎秆物理性状与饲用品质相关性研究  

Study on the Correlation between Stem Physical Properties and Feeding Quality of Hybrid Rice

作　　者：孙镕基 高文婧 丁磊 肖定福[2] 张志飞[1] 陈桂华[1] SUN Rong-ji;GAO Wen-jing;DING Lei;XIAO Ding-fu;ZHANG Zhi-fei;CHEN Gui-hua(College of Agronomy,Hunan Agricultural University,Changsha,Hunan Province 410128,China;College of Animal Science And Technology,Hunan Agricultural University,Changsha,Hunan Province 410128,China)

机构地区：[1]湖南农业大学农学院,湖南长沙410128 [2]湖南农业大学动物科学技术学院,湖南长沙410128

出　　处：《草地学报》2025年第3期879-888,共10页Acta Agrestia Sinica

基　　金：国家现代农业产业技术体系建设专项(CARS-37);湖南省教育厅科学研究项目一般项目(19C0922)资助。

摘　　要：本试验以35个籼型杂交稻(Oryza sativa L.)组合为材料,研究水稻茎秆物理性状与稻谷产量、饲用品质的内在联系,为稻谷高产及秸秆饲用品质优良的品种选育提供筛选指标。结果表明:35个组合材料的11个饲用品质相关指标表现出明显的差异性,其中淀粉含量变异系数最大,为67.38%;9个茎秆物理性状指标中机械组织面积比例变异系数最大,为15.79%。35个组合材料中‘芯香S/R227-2’与‘886S-6/7W565’的饲用品质最佳。Pearson相关性分析发现单穗干重与茎粗呈极显著正相关(P=0.001),与茎壁厚、小维管束数目呈显著正相关(P值分别为0.014和0.026);SPEARMAN等级相关分析发现秸秆饲用品质综合评价排序与9个茎秆物理性状指标中的茎粗、茎壁厚、薄壁组织面积比例、机械组织面积比例、维管组织面积比例等5个指标排序及5个指标的加权隶属函数综合排序等级呈极显著正相关(P值分别为0.000,0.000,0.001,0.008,0.008和0.000)。因此,水稻倒三节茎粗、茎壁厚、薄壁组织面积比、机械组织面积比、维管组织面积比等物理性状指标可用于指示水稻秸秆饲用品质。In this study,35 indica hybrid rice combinations were used as materials to explore the internal rela⁃tionship between the physical properties of rice stem and rice yield as well as straw feeding quality,thereby pro⁃viding screening indicators for the breeding of rice varieties with high yield and good straw feeding quality.The results showed that there were significant differences in 11 feed quality related indexes of the 35 combination materials.The coefficient of variation of starch content was the largest,which was 67.38%,and the coefficient of variation of mechanical tissue area ratio was the largest among the 9 stem physical traits,which was 15.79%.Among the 35 composite materials,XinxiangS/R227-2'and'886S-6/7W565'exhibited the best feeding quality.Pearson correlation analysis revealed a highly significant positive correlation between the dry weight of one panicle and culm diameter(P=0.001),as well as significant positive correlations with stem wall thickness and the number of small vascular bundles(P=0.014,0.026,respectively).SPEARMAN rank cor⁃relation analysis indicated that the comprehensive evaluation ranking of straw feeding quality was significantly positively correlated with the ranking of five indicators,namely culm diameter,stem wall thickness,proportion of parenchyma area,proportion of mechanical tissue area,and proportion of vascular bundle area,among the nine physical traits of stems.Additionally,it was positively correlated with the weighted membership function comprehensive ranking of these five indicators(P=0.000,0.000,0.001,0.008,0.008 and 0.000,respec⁃tively).Therefore,physical indicators such as culm diameter,wall thickness,parenchyma area ratio,mechani⁃cal tissue area ratio,and vascular bundle area ratio can be used to indicate the feeding quality of rice straw.

关 键 词：水稻 茎秆 物理性状 饲用品质 相关性分析 

分 类 号：S544.9[农业科学—作物学]