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以美早/东北山樱桃、美早/马哈利为试材,研究了淹水过程中两种甜樱桃砧木生长根、褐色木质根中无氧呼吸酶——丙酮酸脱羧酶(PDC)、乙醇脱氢酶(ADH)和乳酸脱氢酶(LDH)活性及褐色木质根的发酵产物——乙醛、乙醇和乳酸含量变化,结果表明:两类根系PDC、LDH活性均呈先升后降趋势,ADH活性变化在生长根中亦先升后降,而在褐色木质根中为上升趋势,三种酶活性变化幅度表现为生长根大于褐色木质根;美早/东北山樱桃两类根系中ADH和LDH活性增加幅度大于美早/马哈利,PDC则相反;两种砧木褐色木质根乙醛、乙醇含量呈升高趋势,乳酸含量先升后降;最终美早/东北山樱桃褐色木质根中乙醛含量低于美早/马哈利,乙醇含量则相反,而乳酸含量前者较早达峰值且高于后者峰值。
In this study, the growth of two sweet cherry rootstocks and the anaerobic respiration enzyme - pyruvate decarboxylase (PDC) in brown woody roots during the flooding process were studied by using the American early / Oriental cherry, American early / The activities of ADH and LDH and the contents of acetaldehyde, ethanol and lactic acid in the brown woody roots were analyzed. The results showed that the activities of PDC and LDH increased first and then decreased Trend, the change of ADH activity also increased first and then decreased in the growth root, but increased in the brown woody root. The changes of the three enzyme activities showed that the growth root was bigger than the brown root; ADH and LDH activity increased more than the United States early / Mahali, PDC is the opposite; two rootstock brown woody root acetaldehyde, ethanol content increased, the content of lactic acid increased first and then decreased; finally the United States early / northeastern mountain cherry brown wood The content of acetaldehyde in roots was lower than that in the United States and Mahalli, while the content of ethanol was the opposite while that of the former was earlier and higher than that of the latter.