Potassium application alleviates the drought-induced reduction in photoassimilates synthesis and distribution within the middle and upper fruiting branches, enhancing subtending cotton boll weight.

• Tác giả: Nan Cao, Chenli Guo, Wei Hu, Lin Liu, Hongbin Wang, Xuanshan Wang, Yuyao Wang, Manli Zhao, Wenqing Zhao, Zhiguo Zhou
• Ngôn ngữ: eng
• Ký hiệu phân loại: 333.822 Coal
• Thông tin xuất bản: France : Plant physiology and biochemistry : PPB , 2025
• Bộ sưu tập: NCBI
• ID: 743187

Tóm tắt

Drought significantly reduces cotton boll yields across various fruiting branches (FBs). Potassium (K) application can partially mitigate the drought-induced damage by modifying the biosynthesis of photoassimilates in the leaf subtending to cotton boll (LSCB) and facilitating their transport to the subtending bolls, although its effects vary among FBs. The underlying mechanisms remain unclear. To investigate this, potting experiments were conducted at three soil relative water content (SRWC): 75 ± 5 % (W75), 60 ± 5 % (W60), and 45 ± 5 % (W45), along with K rates of 0 (K0), 150 (K150) and 300 (K300) kg K