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2010•Unpublished venueRequires access

Cytological observation of male gametogenesis development of digenic dominant Shaan-GMS in Brassica napus

Liu S

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Abstract

DDGMS (digenic dominant genic male sterile) microsporogenesis was investigated using Shaan-GMS rapeseed (Brassica napus L.) by squashing and freezing the anther. In sterile plants,the anther was shriveled,dehydrated and small with short filaments. Cytological observation revealed a normal tetrad stage of anther. Pollen aborted at the uninucleate microspore stage when tetrads exine aborted after microspores released. Exines and cytoplasm of microspores as well as tapetum cells prematurely degenerated. Only debris left subsequently in the distorted and shrunk locules. The results suggested rapeseed Shaan-GMS to be a new type of DDGMS.

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What this paper is about

DDGMS (digenic dominant genic male sterile) microsporogenesis was investigated using Shaan-GMS rapeseed (Brassica napus L.) by squashing and freezing the anther. In sterile plants,the anther was shriveled,dehydrated and small with short filaments. Cytological observation revealed a normal tetrad stage of anther. Pollen aborted at the uninucleate microspore stage when tetrads exine aborted after microspores released. Exines and cytoplasm of microspores as well as tapetum cells prematurely degenerated. Only debris left subsequently in the distorted and shrunk locules. The results suggested rapeseed Shaan-GMS to be a new type of DDGMS.

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Available abstract

DDGMS (digenic dominant genic male sterile) microsporogenesis was investigated using Shaan-GMS rapeseed (Brassica napus L.) by squashing and freezing the anther. In sterile plants,the anther was shriveled,dehydrated and small with short filaments. Cytological observation revealed a normal tetrad stage of anther. Pollen aborted at the uninucleate microspore stage when tetrads exine aborted after microspores released. Exines and cytoplasm of microspores as well as tapetum cells prematurely degenerated. Only debris left subsequently in the distorted and shrunk locules. The results suggested rapeseed Shaan-GMS to be a new type of DDGMS.

Key concepts: Microspore, Tapetum, Locule, Stamen, Biology, Brassica, Rapeseed, Gametogenesis

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Cytological observation of male gametogenesis development of digenic dominant Shaan-GMS in Brassica napus — Research Paper | ScholarLens