不同生育时期甜高粱茎秆糖锤度与农艺性状及生物产量的相关分析  

Correlation Analysis between the Sugar Brix of Stalk and Agronomic Traits,Biological Yield of Sweet Sorghum in Different Growth Stages

作　　者：周亚星[1] 周伟[1] 徐寿军[1] 王振国[2] 李资文 常宇新 刘鹏[1] 张永亮[1] ZHOU Yaxing;ZHOU Wei;XU Shoujun;WANG Zhenguo;LI Ziwen;CHANG Yuxin;LIU Peng;ZHANG Yongliang(College of Agronomy,Inner Mongolia University for Nationalities,Tongliao 028043,China;Tongliao Academy of Agricultural Science,Tongliao 028043,China)

机构地区：[1]内蒙古民族大学农学院,内蒙古通辽028043 [2]通辽市农业科学研究院,内蒙古通辽028043

出　　处：《河南农业科学》2019年第9期46-53,共8页Journal of Henan Agricultural Sciences

基　　金：内蒙古科技创新引导项目(高糖锤度高丹草选育研究与示范);内蒙古自治区教育厅课题(NJZY17193);内蒙古自治区教育科学研究“十三五”规划课题(NGJGH2018095)

摘　　要：为探究甜高粱不同生育时期茎秆糖锤度与农艺性状及生物产量间的相关性,明确影响甜高粱糖锤度形成的主要因子,为合理评价与利用现有种质资源及新品种选育提供参考依据,以sw-1、sw-2、sw-3和sw-4四个甜高粱品系为试材,研究了开花期、灌浆期、乳熟初期、乳熟后期和蜡熟期茎秆糖锤度与株高、榨汁率、有效糖含量和生物产量的相关关系。结果表明,不同生育时期茎秆糖锤度与株高的相关性未达到显著水平;灌浆期茎秆糖锤度与榨汁率、有效糖含量呈显著负相关,与生物产量则呈极显著负相关。开花期的茎秆糖锤度与灌浆期的呈正相关,与乳熟初期、乳熟后期、蜡熟期的呈负相关;灌浆期的茎秆糖锤度与乳熟初期、乳熟后期的呈负相关,与蜡熟期的呈正相关;乳熟初期的茎秆糖锤度与乳熟后期、蜡熟期的均呈正相关;乳熟后期与蜡熟期的茎秆糖锤度呈正相关。对蜡熟期与开花期、灌浆期、乳熟初期、乳熟后期的茎秆糖锤度进行通径分析显示,乳熟初期茎秆糖锤度对蜡熟期茎秆糖锤度的影响最大,通径系数为1.418 3。综合以上分析得出,在甜高粱育种中选择高产、高糖锤度的材料时,应着重选择乳熟初期糖锤度高的亲本。The aim is to explore the correlation between the sugar brix of stalk and agronomic traits,biological yield in different growth stages of sweet sorghum,and to explicit the determinants for the sugar brix formation of sweet sorghum,so as to provide reference basis for rational evaluation and utilization of existing germplasm resources and breeding varieties.The correlation between the sugar brix of stalk in the anthesis stage,grain-filling stage,early endosperm maturation,late endosperm maturation,dough stage and the plant height,rate of juice,effective sugar content and biological yield was studied using the sweet sorghum materials of sw-1,sw-2,sw-3 and sw-4.The results showed that the correlation between the sugar brix of stalk and plant height was not obvious at different growth stages.There was a significant negative correlation between the rate of juice and sugar brix in grain-filling stage.At the grain-filling stage,the sugar brix of stalk showed a significant negative correlation with effective sugar content,and an extremely significant negative correlation with biological yield.There was a positive correlation of sugar brix between anthesis stage and grain-filling stage,while there was a negative correlation of sugar brix between anthesis stage and early endosperm maturation,late endosperm and dough stage.There was a negative correlation of sugar brix between grain-filling stage and early endosperm maturation,late endosperm maturation,while there was a positive correlation of sugar brix between grain-filling stage and dough stage.Furthermore,there was a positive correlation of sugar brix between early endosperm maturation and late endosperm maturation,dough stage.The sugar brix of late endosperm maturation was positively correlated with that of dough stage.The path analysis of sugar brix of stalk between dough stage and anthesis stage,grain-filling stage,early endosperm maturation and late endosperm maturation showed that the sugar brix of stalk in the early endosperm maturation had the greatest influence

关 键 词：甜高粱 糖锤度 农艺性状 产量 相关性 生育时期 

分 类 号：S514[农业科学—作物学]