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Possible mitochondrial involvement in mechanism of cytoplasmic male sterility in maize (Zea maysL.)

✍ Scribed by C. V. Watson; J. Nath; Dave Nanda

Publisher
Springer
Year
1977
Tongue
English
Weight
611 KB
Volume
15
Category
Article
ISSN
0006-2928

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✦ Synopsis

The mechanism of cytoplasmic male sterility was investigated in maize by isolating mitochondria from seedlings and various anther stages and analyzing cytochrome oxidase and succinic dehydrogenase biochemically and electrophoretically. Sterile anthers exhibited a lack of biochemical activity and fewer isozymatic bands for cytochrome oxidase. No apparent differences were detected biochemically or electrophoretically between fertile and sterile anthers for succinate dehydrogenase.

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The activity of glutamate-oxalacetate and glutamate-pyruvate transaminases (GOT 2.6.1.1., GPT 2.6.1.2.) was determined in seedlings of normal and opaque-2 maize. The activity of these transaminases was determined in homozygotes +/+ and o2/o2, their F1 hybrid, in mixture of +/+ and +/o2 in S3F4 gener