Normal ripening cultivars of Pyrus serotina are either climacteric or non-climacteric
Normal ripening cultivars of Pyrus serotina are either climacteric or non-climacteric
复制标题
梨树的正常成熟品种要么是跃变型，要么是非跃变型
DOI：
10.1016/0304-4238(91)90129-m
复制
发表时间：
1991
影响因子：
4.3
通讯作者：
W. B. Mcglasson
中科院分区：
文献类型：
--
作者：
C. Downs;C. Brady;J. Campbell;W. B. Mcglasson
对两种黄梨（pyrus sertina）品种的更年期状况进行了研究。这两个品种都是偶发苗。果实在发育早期表现出较高的呼吸速率，随着果实成熟而下降。两者都成熟了，从皮肤去角质和软化来看，在开花后的相似时间。然而，只有“Chojuro”品种的成熟变化与乙烯和二氧化碳产量的增加有关。在品种“nijisisiki”中，乙烯和二氧化碳没有随着果实成熟而增加。连续暴露于丙烯的果实加速了品种“尼吉塞奇”的果皮去角质，但没有诱导乙烯的产生或呼吸的更年期高峰。而在“Chojuro”中，皮肤去角质、乙烯和二氧化碳的产生都是在接触丙烯后进行的。我们得出结论，尽管两种品种的果实发育和成熟相似，但“Chojuro”的成熟伴随着相关的呼吸更年期，而“nijisisseiki”则没有。
The climacteric status has been investigated in two cultivars ofPyrus serotina(Rehder). Both cultivars are chance seedlings. The fruit displayed a high respiration rate early in development that declined as fruit matured. Both ripened, as seen by skin degreening and softening, at similar times after flowering. Yet only in cultivar ‘Chojuro’ were the ripening changes associated with increased rates of ethylene and carbon dioxide production. In cultivar ‘Nijisseiki’ ethylene and carbon dioxide did not increase as fruit ripened. Continuous exposure of fruit to propylene accelerated skin degreening in cultivar ‘Nijisseiki’ but did not induce ethylene production or a climacteric peak of respiration. Whereas, in ‘Chojuro’, skin degreening, and ethylene and carbon dioxide production were all advanced after exposure to propylene.We conclude that although fruit development and ripening of both cultivars are similar, ‘Chojuro’ ripens with an associated respiratory climacteric, whereas ‘Nijisseiki’ does not.