HUBEI AGRICULTURAL SCIENCES ›› 2019, Vol. 58 ›› Issue (11): 12-17.doi: 10.14088/j.cnki.issn0439-8114.2019.11.003

• Breeding & Cultivation • Previous Articles     Next Articles

Genetics and correlation analysis of husks and agronomic traits in sweet corn

ZHANG Li-ping1, XIE Fu-gui1, FENG Di-nan1, GONG Jie1, FENG Fa-qiang1, GONG Qing-you2   

  1. 1.College of Agriculture,South China Agricultural University,Guangzhou 510642,China;
    2.Zhuhai Agricultural Science Research Center,Zhuhai 519000,Guangdong,China
  • Received:2019-03-21 Online:2019-06-10 Published:2019-12-05

Abstract: 30 sweet corn inbred lines and 26 crosses from them were selected as the materials, 7 agronomic traits and 9 husk traits were identified and analyzed by additive-dominant genetic model. The results showed that the mean squares of all traits except for the width of the longest husk reached significant difference at the 0.05 or 0.01 level. The additive variance ratio was greater than the dominant variance ratio in most traits, and the error variance ratio reached significant at the 0.05 or 0.01 level in all traits. The additive and dominant effect values of agronomic traits and husk traits were predicted in 30 sweet corn inbred lines. The additive effect values of most agronomic traits and husk traits in M06 were positive and significant at the level of 0.05 or 0.01. The dominant effect values of most agronomic traits and husk traits in M06×S85 were positive and significant at the level of 0.05 or 0.01. The correlation analysis showed that fresh weight of ear was positively correlated with net weight of ear, number of leaves above ear, the width ear leaf of dry weight of husks, total area of husks and average width of husks, respectively. Net ear weight was positively correlated with the width of ear leaf and average width of husks, respectively. The correlations between the length of ear leaf and the total area of husks, between the width of ear leaf and dry weight of husks were positively and significant.

Key words: sweet corn(Zea mays L. sacharata Sturt), husk traits, agronomic traits, genetic model, correlation analysis

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