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本文选用云烟87和韭菜坪2号2个烤烟品种为试验品种,通过测定烟叶在根黑腐病发病中期丙二醛、总酚、类黄酮、游离氨基酸及可溶性总糖含量等主要生理生化指标,研究2个烤烟品种对根黑腐病的生理响应及其差异。结果表明:2个品种发病烟株烟叶的丙二醛含量均高于未发病烟株,且韭菜坪2号发病烟株烟叶丙二醛含量大于云烟87,但无显著性差异;韭菜坪2号发病烟株烟叶内的游离氨基酸含量显著高于未发病烟株,而云烟87发病烟株烟叶游离氨基酸含量则低于未发病烟株,但无显著性差异;2个品种发病烟株烟叶的类黄酮含量均显著高于未发病烟株;韭菜坪2号发病烟株烟叶总酚含量显著高于未发病烟株,而云烟87发病烟株总酚含量虽高于未发病烟株,但两者差异不显著;2个品种发病烟株可溶性总糖的含量均有升高,但与未发病烟株比较,均未达显著性差异。韭菜坪2号对根黑腐病菌发病的生理响应更为敏感,可能会更容易受根黑腐病的影响。 相似文献
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in order to improve the yield and quality of flue-cured tobacco and crisp red plum, and verify the effect of "Yilv expert" plant nutrient solution on two economic crops, field demonstration was carried out. The results showed that: the application of "Yilv expert" plant nutrient solution on Flue-cured Tobacco promoted the improvement of agronomic traits; the yield increased by 10.58 kg / mu, the average price increased by 0.34 yuan / kg, the output value increased by 348.58 yuan / mu, the first-class tobacco increased by 6.93 percentage points, the appearance quality of tobacco leaves was good, the chemical composition was coordinated, the potassium content in upper leaves increased by 18.67%, and the nicotine content in upper leaves decreased by 23.73%. The fruit setting rate increased by 8.08% to 47.91%; the single fruit weight increased by 17.73%; the fruit holding capacity increased by 57.45% on the 30th day after maturity, with a time cycle of 7-12 days; the intact rate increased by 19% on the 25th day; the intact rate increased by 35% on the 30th day; the intact rate increased by 14% on the 35th day. 相似文献
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