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- Title
Comparison of gas exchange and chlorophyll fluorescence of low-potassium-tolerant and -sensitive soybean [ Glycine max (L.) Merr.] cultivars under low-potassium condition.
- Authors
Li, X.; Cao, P.; Wang, X.; Cao, M.; Yu, H.
- Abstract
The effects of potassium (K) deficiency on chlorophyll (Chl) content, photosynthetic gas exchange, and photosystem II (PSII) photochemistry during the seedling stage were investigated in two soybean [ Glycine max (L.) Merr.] cultivars, low-K sensitive Tiefeng31 and low-K tolerant Shennong6. The cultivars were grown hydroponically in K-sufficient (KS) and K-deficient (KD) solutions. Photosynthetic gas exchange and Chl content in Tiefeng31 were severely affected by the low K condition, but were almost unaffected in Shennong6. This difference is in accordance with the PSII photochemistry in the plants, indicating that the photosynthetic apparatus of Shennong6 is more tolerant to low-K stress than that of Tiefeng31.
- Subjects
GAS exchange in plants; POTASSIUM deficiency diseases; CHLOROPHYLL; SOYBEAN; GLYCINE metabolism; PHOTOSYNTHESIS
- Publication
Photosynthetica, 2011, Vol 49, Issue 4, p633
- ISSN
0300-3604
- Publication type
Article
- DOI
10.1007/s11099-011-0073-4