Comparative seed ecophysiology of wild and cultivated Carica papaya trees from a tropical rain forest region in Mexico.
Comparative seed ecophysiology of wild and cultivated Carica papaya trees from a tropical rain forest region in Mexico.
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墨西哥热带雨林地区野生和栽培番木瓜种子生态生理学的比较。
DOI：
10.1093/treephys/18.4.277
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发表时间：
1998
期刊：
影响因子：
4
通讯作者：
C. Vázquez
中科院分区：
文献类型：
--
作者：
L. Paz;C. Vázquez
为了确定几个世纪的栽培实践对种子行为和休眠机制的影响，我们比较了野生和栽培（驯化）番木瓜种群的种子大小和发芽特征。在不同的温度、光照、种子浸泡和赤霉酸处理条件下进行了发芽实验。野生木瓜种子表现出对处理的反应，这是许多雨林先锋树种子的特征。种子小且对光敏感，而栽培的木瓜种子大 33%，它们的光反应以及其他生理特征表明，栽培导致特定环境条件对休眠打破和发芽的重要性降低。
To ascertain the effects of centuries of cultivation practices on seed behavior and dormancy mechanisms, we compared seed size and germination characteristics of wild and cultivated (domesticated) populations of Carica papaya L. Germination experiments were carried out under various conditions of temperature, light, seed soaking and gibberellic acid treatments. Wild papaya seeds showed responses to treatment that are characteristic of seeds of many rain forest pioneer trees. Seeds were small and light sensitive, whereas cultivated papaya seeds were 33% larger and their light responses as well as other physiological traits indicated that cultivation had resulted in a lessening in the importance of specific environmental conditions for dormancy breaking and germination.