Stress-induced changes in the content of the proliferative antigen of initial cells in the stem apices of two wheat cultivars differing in drought resistance
2004
Evseeva, N.V. (Russian Academy of Sciences, Saratov (Russian F.)) | Demchenko, O.A. | Shchyogolev, S.Yu. | Volodarsky, A.D.
The content of the proliferative antigen of initial cells (PAI) in the stem apex cells of two common wheat (Triticum aestivum L.) cultivars differing considerably in their drought resistance - Saratovskaya 29 and Opal- was measured at post-osmotic stress repair by using a special immunochemical test system. The PAI content of these cells was studied as normal and at post-stress repair. A marked response of droughted plants was obtained that was reflected by a change in the PAI content of stem apical cells. Saratovskaya 29 (resistant) did not differ from Opal (sensitive) in the post-stress resumption of leaf growth processes. However, differences in the content of PAI were observed during the post-stress regeneration of the meristematic tissues. These differences can serve as a basis for the study and prediction of plant resistance to unfavorable abiotic factors in the breeding of high-yielding wheat cultivars.
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