A study on Induction, Identification,and Utilization of Trisomic Plants in Upland Cotton Ⅲ. Embryological Observation of Female Gametophyte Development

doi:10.3321/j.issn:1000-7091.1995.04.006

Abstract

Abstract: The cytological observation of mature embryo sac structure of three trisomics(Ftr-2,Fir-4 and Fir-5 )and two tetrasomics(Fte-4 and Fie-5) and their mote rate analysis indicated that the time of embryo sac abortion is different for these different aneuploids.Abortion of Fir-2 and Fie-5 occures mainly before two-nucleus embryo sac phase, while Frt - 4, Fir-5 and Fie-4 may have certain abortion rate at each phase.The embryo sac abortion is the main factor that leads to the decreasing of the transmission frequency of Fir-2 and Fir-5 through female gametes,whereas the lower transmission frequency of Ftr-4 through female garnetes is due to the co-effect of both embryo sac and young embryo abortion.

Key words: Upland cotton, Trisomics, Embryo sac abortion, Transmission frequency

CLC Number:

S562

Hu Baomin, Zhang Tianzhen, Pan Jiaju, Miao Fuhong. A study on Induction, Identification,and Utilization of Trisomic Plants in Upland Cotton Ⅲ. Embryological Observation of Female Gametophyte Development[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1995, 10(4): 34-38. doi: 10.3321/j.issn:1000-7091.1995.04.006.

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