江苏沿海滩涂地甜高梁农艺性状灰色关联度评价

Evaluation of agronomic characteristics of sweet sorghum by gray relational grade analysis in coastal region in Jiangsu Province

采用灰色关联度分析法,选择出苗率、生育期、鲜干比、糖锤度、株高、茎粗、千粒重、倒伏率、鲜草产量及籽粒产量等项目作为评价指标,综合评价19个甜高梁(Sorghum bicolor)品种(系)在江苏省沿海滩涂的农艺性状表现,结果表明,中科甜4号加权关联度最高,为0.831,综合性状优于其他品种(系),具有出苗好、偏早熟、丰产、抗倒伏、适应性广等优良特性;NJ003、SN009加权关联度分别为0.779、0.747,位居第2、3位,评价结果与品种的实际表现基本一致。因而,该评价方法可为甜高粱品种在该地区的选育及推广提供科学依据。

In order to comprehensively evaluate agronomic characteristics of sweet sorghum(Sorghum bicolor)in coastal soil in Jiangsu Province,19 varieties of sweet sorghum were analyzed by gray relational grade involved in emergence rate,growth period,fresh to dry ratio,sugar brix,plant height,stem diameter,1 000-grain weigh,lodging rate,fresh forage yield and grain yield.The results showed that Zhongke 4was the best variety with the highest weighted relational grade(0.831)and the excellent characteristics of good emergence,partial early maturity,high yield,lodging resistance and adaptability.The weighted relational grades of NJ003 was 0.779 and that of SN009 was 0.747 which occupied the second and third place,respectively.The evaluation results were essentially identical with the field performance of the tested varieties.Therefore,the comprehensive evaluation provided a scientific evidence for sweet sorghum breeding in the region.