Comprehensive Evaluation of Main Agronomic Traits and Yield in Hybrid Combinations of Sweetened Waxy Maize
To identify the key agronomic traits for comprehensive evaluation and enhance the breeding efficien-cy of sweetened waxy maize,genetic variation,correlation analysis,principal component analysis,and cluster analy-sis were conducted on 13 agronomic traits across 36 sweetened waxy maize hybrid combinations.The results showed that the coefficients of variation for the main agronomic traits ranged from 0.092 to 1.072,with the highest variation in bald tip length and the lowest in ear length.Correlation analysis revealed that row number and ear length had the strongest associations with fresh ear yield,while ear position,bald tip length,and single axis weight had the weak-est.Principal component analysis showed that the cumulative variance contribution rate of the first five principal components was 79.117％.Based on these comprehensive evaluations,hybrid combinations C4,C28,and C5,which exhibited superior overall traits,are recommended for further variety comparison trials.Conversely,combinations C13,C17,C30,and C34 showed poorer agronomic traits and yield,suggesting a need for further parental trait and gene enhancement.
万方数据
维普
