核桃树叶的光合作用性能在发生叶子烧伤时
S W Wang1, C J Xing1, C F Zhang1
1College of Forestry and Landscape Architecture, Xinjiang Agricultural University/Key Laboratory of Forestry Ecology and Industry Technology in Arid Region, Education Department of Xinjiang, 311 Nongdadong Road, 830052 Urumqi, Xinjiang, China.
Photosynthetica
|December 9, 2024
概括
叶子烧伤会根据品种和疾病严重程度对核桃光合作用产生不同的影响. 早期阶段显示出口腔问题,而后期阶段显示出更广泛的光合作用损伤.
科学领域:
- 植物生理学 植物生理学
- 森林病理学 森林病理学
背景情况:
- 叶烧是一种影响核桃树 (Juglans regia) 的常见疾病.
- 了解其对光合作用的影响对于疾病管理和产量预测至关重要.
研究的目的:
- 为了研究叶子烧伤对两种核桃品种光合作用参数的影响.
- 为了确定疾病持续时间和严重程度如何影响光合作用反应.
主要方法:
- 在Juglans regia"Wen185"和"Xinxin2"的症状和无症状树上测量了光合作用参数.
- 测量包括净光合作用率 (P_N),口腔限制 (L_s),细胞间二氧化碳度 (C_i) 和叶绿素光.
主要成果:
- 在'Wen185'中,早期的低级烧伤导致了更低的P_N,更高的C_i,并增加了L_s.
- 在"Wen185"中,先进的高级烧灼导致了减少P_N,C_i和最大量子产量,增加了L_s和非光化学火.
- 在整个感染过程中",xinxin2"始终表现出非口腔限制.
结论:
- 叶子烧伤对核桃光合作用的影响因品种,疾病持续时间和严重程度而异.
- "Wen185"的光合作用从口腔限制转移到非口腔限制,而"Xinxin2"显示持续的非口腔限制.
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