Studies on physiological reactions of soybean cultivars tolerant and susceptible to rust (Phakopsora pachyrhizi Syd.)
1986
Shin, D.C. (Rural Development Administration, Milyang (Korea R.). Yongnam Crop Experiment Station) | Tschanz, A.T. (Asian Vegetable Research and Development Center, Tainan (Taiwan, Province of China))
The physiological reaction of two soybean (Glycine max (L.) Merrill) cultivars tolerant and susceptible to rust (Phakopsora pachyrhizi Syd.) was studied at the AVRDC in Taiwan, ROC. The rust epidemic on the susceptible cultivar began earlier and progressed more rapidly than on the tolerant cultivar. The defoliation by rust infection increased rapidly after the latter half of pod filling. The reduction of LAI by rust in the susceptible cultivar occurred earlier than in the tolerant cultivar. The differences in the chlorophyll content between the rust-free and rust-infected plants was 2.04 % in the tolerant, and 16.43 % in the susceptible cultivar
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