ibclogo XVI International Botanical Congess


Abstract Number: 4031
Poster No. = 805


WHITESPOT CLOROSIS IN TRITICUM GENUS


L. Beknazarian, R. Sadoian, Armenian Agricultural Academy, 74 Terian St., Yerevan, 375009, Armenia


Triticum genus whitespot cloroses occurs in interspecific and in intraspecific cross-breeding of soft wheat. In the course of evolutionary members, the complementary system of hybrid lethality divided into, according to the species, ecological-geographical regions and biotypes. In this sense, the form of the specific localization of the whitespot cloroses gens (Ch1ws, Ch2 ws, Ch3 ws) is interesting, and gives us a chance to observe the etymological connections of the wheat and fix the information about its origin and resettlement. The studying of different species of 287 wheat showed that 119 of them carry dominant gens of whitespot cloroses, the complementation of which brings to the partial infringement of the mobile equilibrium, but in the correlation of the chlorophylls of A and B there is essentially no shift. The studying of the separate genoms of the possible sources of modern species of wheat makes it possible to fix the level of the occurrence of the negative mutations and the direction of their variability.


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