Application and Classification of Cytoplasmic Male Sterile Inbred JnA in Maize

doi:10.3321/j.issn:1000-7091.2006.01.008

Abstract

Abstract: Inoculation of leaf on Helminthosporium Maydis Nisk and observation of anther and pollen and fertility restoration-retention identification indicated that JnA should be classified into group S of cytoplamic male sterility.At the same time,fertility observation of F₂ and microscopy identification of F₁ pollen through I-KI dyeing confirmed this conclusion.Several sterile plants and halfrestore plants were found in F₂ of JnA×Hui 313,which indicated that restoration of sterile character of JnA was controlled by main effect gene and micro-effect polygene.Through the study for cytology of JnA,JnA aborted at late microspore stage to 2-celled pollen stage.Abortion was related to abnormal split of tapetum.At the same time,feasibility for application of JnA in production was also studied.

Key words: Zea may L, Cytoplasmic male sterility, JnA, Classification, Application

CLC Number:

S513.03

HOU Ai-bin, LIU Qing-shan, DONG Liang-li, LI Tuan-yin, HOU Xu-dong, LIANG Du, DUAN Bing. Application and Classification of Cytoplasmic Male Sterile Inbred JnA in Maize[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2006, 21(1): 31-34. doi: 10.3321/j.issn:1000-7091.2006.01.008.

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