砧木
园艺
生物
光合作用
脯氨酸
苦瓜
苦瓜
西瓜
叶绿素
嫁接
开枪
基因表达
APX公司
超氧化物歧化酶
苗木
植物
糖
气孔导度
基因
南瓜
黄瓜
盐度
丙二醛
脱落酸
过氧化氢酶
作者
Kaixing Lu,Jiutong Sun,Qiuping Li,Xueqin Li,Songheng Jin
出处
期刊:Horticulturae
[MDPI AG]
日期:2021-10-11
卷期号:7 (10): 391-
被引量:3
标识
DOI:10.3390/horticulturae7100391
摘要
Recently, grafting has been used to improve abiotic stress resistance in crops. Here, using watermelon ‘Zaojia 8424’ (Citrullus lanatus) as scions, three different gourds (Lagenaria siceraria, 0526, 2505, and 1226) as rootstocks, and non-grafted plants as controls (different plants were abbreviated as 0526, 2505, 1226, and 8424), the effect of cold stress on various physiological and molecular parameters was investigated. The results demonstrate that the improved cold tolerance of gourd-grafted watermelon was associated with higher chlorophyll and proline content, and lower malondialdehyde (MDA) content, compared to 8424 under cold stress. Furthermore, grafted watermelons accumulated fewer reactive oxygen species (ROS), accompanied by enhanced antioxidant activity and a higher expression of enzymes related to the Calvin cycle. In conclusion, watermelons with 2505 and 0526 rootstocks were more resilient compared to 1226 and 8424. These results confirm that using tolerant rootstocks may be an efficient adaptation strategy for improving abiotic stress tolerance in watermelon.
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