爆裂玉米种质资源的果穗性状和膨爆特性多样性及相关性分析
研究分析了50份不同爆裂玉米种质材料的果穗性状及其膨爆特性。结果表明：果穗性状中秃顶长的变异系数为68.88%,果穗穗长、行数、行粒数、穗粗、百粒重呈正态分布,而果穗秃顶长呈偏态分布；膨爆特性中膨爆倍数的变异系数为32.86%,膨爆倍数呈正态分布,膨爆率呈偏态分布；表明爆裂玉米种质材料间主要性状具有较为丰富的多样性,有助于优良品种的筛选和比较,新品种的培育和改良。此外,膨爆特性、果穗性状间的相关性分析表明,膨爆倍数与膨爆率呈显著正相关,膨爆倍数与穗长、穗行数、行粒数、穗粗呈正相关,与秃顶、百粒重呈负相关；膨爆率与行粒数、穗粗呈显著正相关,与穗长、秃顶、行数、百粒重呈正相关。
英文摘要:
The ear characters and popping characters of 50 different popcorn germplasm were analyzed. The results showed that the variation coefficient of the ears’ bald tip lengths was 68.88%, and the ear lengths, rows per ear, seeds per row, ear diameter and 100-grain weight presented a normal distribution, while the bald tip lengths a skew distribution; Popping volume were 32.86%, presented a normal distribution, popping rate presented a skew distribution; The results showed that the main characters of popcorn germplasm had abundant diversity, which was helpful for screening and comparison of good varieties and breeding and improvement of new varieties. Correlation analysis between Popping characteristics and ear traits showed that, the popping volume was positively correlated with the popping rate, and the popping volume was positively correlated with the ear length, rows per ear, seeds per row, Ear diameter, and the negative correlation with the Bald length and 100-grain weight; the popping rate was positively correlated with seeds per row and the ear diameter, and was positively related to the ear length, the baldness, the number of rows and the weight of the 100 grain.
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