谷子杂交种主要农艺性状的灰色关联度分析及综合评价  

Grey Correlative Degree Analysis and Comprehensive Evaluation of Main Agronomic Characters of Millet Hybrids

作　　者：史根生[1] 史关燕[1] 杨成元[1] 麻慧芳[1] 陈瑛[1] 

机构地区：[1]山西省农科院经济作物研究所,山西汾阳032200

出　　处：《农学学报》2016年第5期1-5,共5页Journal of Agriculture

基　　金：现代农业产业技术体系专项资金项目"国家谷子糜子产业技术体系汾阳综合试验站"(CARS-07-12.5-B5);"十二五"国家科技支撑计划子课题"春谷晚熟区优质高产高效栽培技术集成与示范"(2014BA07B01);山西省农科院育种工程项目"谷子抗除草剂杂交种及富硒特优新品种选育"(11yzgc008)

摘　　要：谷子杂交种较常规种产量有一定幅度增加,但替代品质优良的常规种大面积应用于生产还存在问题,品质及早衰是需要攻克的难题。以灰色系统理论分析方法为基础,利用灰色关联度分析方法对9份品质优良谷子杂交种的产量及主要农艺性状间的关系进行了研究,寻求解决早衰现象的主要因素。与产量密切相关的农艺性状依次为生育期>小区苗数>穗长>出谷率>功能叶叶宽>功能叶叶长>支穗密度>单穗粒重>单穗重>株高>穗码数>分蘖数。与产量相关的生育期和功能叶叶长、叶宽应作为解决早衰问题的主要因素考虑;适宜的生育期,增加穗长,提高功能叶保持能力,对防止杂交种早衰获得高产有利,该研究为谷子杂交种新品种选育提供参考。Although millet hybrids had higher yield than the traditional seeds, there were still some problems in the production when hybrids were used to substitute qualified traditional seeds. Their quality and premature senility were both challenges. Based on the grey system theory, this paper used grey correlative degree analysis to study the yield of 9 samples of qualified millet hybrids and the relations among their main agronomic traits, so as to find the main factors which could solve the premature senility problem. Main agronomic traits were closely related to yield in the following order： growth duration〉sprout number per acreage〉ear length〉grain rates〉functional leaves width〉functional leaves length〉density of secondary ear〉grain weight per ear〉single ear weight〉plant height〉code number per ear〉number of tillers. The growth duration, functional leaves length and width should be considered as the main factors which had a great effect on premature senility solution. The suitable growth duration could increase ear length and improve the retention capacity of functional leaves, which could prevent premature senility and get high yield of millet hybrids. This study provided a reference for the selection and breeding of new varieties of millet hybrids.

关 键 词：谷子 杂交种 灰色关联度 农艺性状 

分 类 号：S515[农业科学—作物学]