Acta Agriculturae Zhejiangensis ›› 2023, Vol. 35 ›› Issue (2): 259-265.DOI: 10.3969/j.issn.1004-1524.2023.02.02

• Crop Science • Previous Articles     Next Articles

Analysis of biological, physiological and biochemical mechanism of abortion of C-type cytoplasmic male sterile line S37-2 in maize

ZHENG Ran1(), LYU Dan1, WU Qinggui1, DI Xiaohong1, ZHU Tongtong1, QIU Guanjie1, LUO Hongbing1,2,*()   

  1. 1. College of Agronomy, Hunan Agricultural University, Changsha 410128, China
    2. Maize Engineering Technology Research Center of Hunan Province, Changsha 410128, China
  • Received:2022-04-25 Online:2023-02-25 Published:2023-03-14
  • Contact: LUO Hongbing

Abstract:

To reveal the physiology and biochemistry mechanism of male sterile abortion in maize, the sterile line S37-2 and fertile line B37-2 were applied as test materials in the present study. The main agronomic traits of S37-2 and B37-2 were investigated. The differences of the contents of soluble sugar, soluble protein, free proline, soluble starch, and malonaldehyde (MDA), and the activities of catalase (CAT), superoxide dismutase (SOD), peroxidase (POD) in leaves between S37-2 and B37-2 were determined. The results showed that S37-2 had thin and atrophic anther shape and poor plumpness, as the length and cross section diameter of anther were significantly (P<0.05) smaller than those of B37-2. The contents of soluble protein, free proline and soluble sugar in S37-2 leaves were significantly (P<0.05) higher than those of B37-2 at the tasseling stage and pollen shedding stage. During the whole growth period, the CAT and SOD activities of S37-2 were significantly (P<0.05) lower than those of B37-2 at the same growth stage. It was inferred that the blocked transportation path of soluble protein, free proline and soluble sugar in leaves of S37-2, with the relatively lower activities of SOD and CAT led to the sterility of S37-2.

Key words: maize, male sterility, phenotypic traits, physiological indicators

CLC Number: