Changes and diversity of quantitative traits of waxy maize landraces collected from different ecological regions of Yunnan province

doi:10.14088/j.cnki.issn0439-8114.2019.21.006

Abstract

Abstract: To understand the changes and the diversity differences of quantitative traits of waxy maize landraces collected from four maize ecological regions of Yunnan including warm central ecological region, cold northwestern ecological region, warm and hot southern ecological region and warm and cool northeastern ecological region, the differences of the variation coefficients and the Shannon-Wiener index of 16 traits, including phenological traits, plant height and ear height, grain yield traits and quality traits, in four maize ecological regions were calculated by SPSS 22.0, and cluster map was constructed to analyze the origin relationship between experimental materials. The results showed that the variation coefficients of plant height and ear height in northeastern maize ecological region were significantly higher than the other three. The variation coefficients of ear diameter, cob diameter, 1 000-kernel weight, number of rows per ear and fat content in central maize ecological region were significantly higher than northeastern maize ecological region. There were significantly different among the four maize ecological regions in diversity index of plant height, ear height, ear length and cob diameter, and the largest one was southern maize ecological region, next followed by central maize ecological region, and northeastern maize ecological region was the smallest. The diversity index of the other 12 traits in southern maize ecological region were higher than those in central maize ecological region, but the difference was not significant. Besides the days from tasseling to anthesis, the days from anthesis to silking and the days from sowing to maturity, the diversity index of other 9 traits in northwestern maize ecological region were significantly higher than northeastern maize ecological region. Cluster analysis showed that the experiment materials could be divided into two groups. The groupⅠcontained 43 materials, and the groupⅡ contained only 5 materials.

Key words: waxy maize, landraces, quantitative traits, diversity, ecological region, Yunnan province

CLC Number:

S513
S326

LONG Wen-jie, WU Xiao-yang, ZHOU Guo-yan, CHEN Dan, WU Shao-yun, CAI Qing. Changes and diversity of quantitative traits of waxy maize landraces collected from different ecological regions of Yunnan province[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(21): 35-41.

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