裂爆玉米精准鉴评数学模型构建与育种应用

Precise evaluation of expansion and popping characteristics in popcorn germplasm resources is crucial for genetic improvement and new variety breeding. This study analyzed 32 popping-related parameters to investigate the popping traits of 35 popcorn inbred linesEvaluation of expansive characteristics and identification index screening of burst maize germplasm resources, applying correlation, principal component, cluster, stepwise discriminant, and regression analyses for comprehensive evaluation. Research data show significant differences in correlations among various trait indicators: higher popping rate positively correlates significantly with expansion volume; more embryo-tip kernels negatively interact significantly with expansion ratio but positively correlate highly significantly with embryo content, kernel width, kernel length, floury and vitreous endosperm contents, thousand-kernel weight, hundred-kernel weight, and moisture content. Principal component analysis effectively condenses 23 expansion-related traits into seven principal components explaining 82.039% of total variance, well representing the original dataset\'s information. Comprehensive analysis identifies kernel width, starch content, vitreous endosperm content, and bulk density as four key evaluation indices, based on which a popping characteristics evaluation model for popcorn is established. Eight superior inbred lines-XF279, XF278, XF277, XF298, XF296, XF261, XF142, and XF218-are selected.