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2006•He'nan nongye daxue xuebaoRequires access

Study on the Ecological Mechanism of Fertility Transition for a Thermo-Sensitive Genic Male Sterile Line in Maize

Jihua Tang

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Abstract

The ecological mechanism of fertility transition for a thermo-sensitive genic male sterile(TGMS) line,Qiong-68 ms,was evaluated by means of sowing by stages,investigating leafage and detecting the fertility of pollen.The results showed that the daily maximum temperature was the principal factor of fertility transition for the TGMS line.It expressed full restoration under low temperature but sterility under high temperature,and the temperature boundary of fertility transition was 30～33℃.The critical sterile stage was spikelet differentiation of the staminate inflorescence.

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The ecological mechanism of fertility transition for a thermo-sensitive genic male sterile(TGMS) line,Qiong-68 ms,was evaluated by means of sowing by stages,investigating leafage and detecting the fertility of pollen.The results showed that the daily maximum temperature was the principal factor of fertility transition for the TGMS line.It expressed full restoration under low temperature but sterility under high temperature,and the temperature boundary of fertility transition was 30～33℃.The critical sterile stage was spikelet differentiation of the staminate inflorescence.

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Available abstract

The ecological mechanism of fertility transition for a thermo-sensitive genic male sterile(TGMS) line,Qiong-68 ms,was evaluated by means of sowing by stages,investigating leafage and detecting the fertility of pollen.The results showed that the daily maximum temperature was the principal factor of fertility transition for the TGMS line.It expressed full restoration under low temperature but sterility under high temperature,and the temperature boundary of fertility transition was 30～33℃.The critical sterile stage was spikelet differentiation of the staminate inflorescence.

Key concepts: Fertility, Sterility, Pollen, Sowing, Biology, Inflorescence, Stamen, Botany

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