Differences in Foliar Carbon and Nitrogen Metabolism among Genotypes of Flue-cured Tobacco

doi:10.7668/hbnxb.2010.03.046

Abstract

Abstract: To study the differences in foliar carbon and nitrogen metabolism among genotypes of flue-cured tobacco, four varieties of flue-cured tobacco YY 5,YY 6,YY 7,ZY 100 was used.The results demonstrated that the pigment content,NR activity, Inv activity, total nitrogen content, total sugar content and the ratio of sugar to nitroge had significant differences.And the pigment content,NR activity, Inv activity, total nitrogen content showed a downward trend while the total sugar content and the ratio of sugar to nitrogen increased with maturity and reached a maximum at the stage of maturity and then decreased.The pigment content,NR activity, Inv activity, total nitrogen content, total sugar content and the ratio of sugar to nitrogen exhibited significant differences among different genotypes.The pigment content, NR activity and Inv activity in YY5,YY 6 and YY 7 were higher than ZY 100.These results indicate different genotypes of flue-cured tobacco had significantly different mature features.The conclusion indicated that mastering the maturity characteristics of the different genotypes of flue-cured tobacco and harvesting timely can improve the yield and quality of tobacco．

Key words: Flue-cured tobacco, Genotype, Maturity, Carbon and nitrogen metabolism

CLC Number:

S572.01

ZHANG Sheng-jie, HUANG Yuan-jiong,, REN Qing-cheng, YANG Tie-zhao. Differences in Foliar Carbon and Nitrogen Metabolism among Genotypes of Flue-cured Tobacco[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2010, 25(3): 217-220. doi: 10.7668/hbnxb.2010.03.046.

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