Newly State-approved Cotton Variety'Liaomian 15':Analysis of High Yield,Stable Yield,Adaptability and Yield Composition Factors
In order to comprehensively understand the production performance of the newly state-approved cotton variety'Liaomian 15',based on the data of the 2016-2018 regional tests of medium-ripe conventional varieties in the cotton area of the Yellow River Basin,the yield,high stability coefficient,yield increase point rate,variety deviation degree and yield components were used to comprehensively evaluate the high yield performance,stable yield property and adaptability of'Liaomian 15'.The results showed that from 2016 to 2018,the average lint yield of'Liaomian 15'was 1712 kg/hm2,which was increased by 16.77％compared to the control'Shikang 126'.Out of 50 experimental points in three years,49 sites increased production.Path analysis showed that the total number of bolls,boll weight,and lint percentage had a direct positive effect on the lint yield of'Liaomian 15'.The direct contribution to the lint yield was as follows:total number of bolls＞lint percentage＞boll weight.'Liaomian 15'was an excellent variety suitable for large-scale promotion in the cotton area of the Yellow River Basin.In production,it was necessary to coordinate the relationship between the three factors while ensuring the total number of bolls,so as to maximize the production potential of the variety and contribute to ensuring the safety of national cotton production.
'Liaomian 15'high yieldstable yieldadaptabilitypath analysistotal boll numberYellow River Basin
万方数据
