د. صلاح عبد العاطي

???? ??? ??????? (????? ???????) Tillering characteristic ?? ?????? ?????? ??????? ????? ?????? ????? ????? ??? ????? ???? ???? ????? ????? ??????? ??????? ?????? ?????? ??? ??? ??? ????? ????? ?????? ?????? ???? ??????. ?? ????? ????? ????? ?????? ??????? ?????? ??? ??????? ??????? ?? ????? ????? ???? ??????? ????? ???? ?????? ????? ?????? ?????? ?? ???? ?????? ????? ?? ????? ??????? ?? ???? ???????? ?? ?????? ???????.
????? ?? ???? ???? ??????? ???????? ?? ?????? ?????? ?????? ??????? ???? ??????? ??? ?????? ?????? (Evers ??????? 2004). ????? ?????? ?????????? Primary tillers ???? ??? ????? ?????? ?????? ??? ?????? ???????? Secondary tillers ?????? ?? ?????? ??????????. ??????? ???? ?????? ??????? ??? ???? ?????? ?? ???? ??? ????? ?????? ????? ????? ????? ?? ?????? ??????? ??????? ?? ?????? ??????? ??????? ?? ?????? ??????? ????? ???? ???? ??????? ?????????? Primary tillers? ????? ???? ???? ???? ????????? Secondary ?? ?????? ?????????? ????? ??????? ?????? ???????? ???? ???? ?? ?????? ????????? ?????? ??????? ??? 30-50% ?? ???? ?????? ?? ?????? ???? ?? ????? ?????? ?50-70% ?? ?????? ?????? (Thiry ???????a2002)? ????? ???????? ?????? ?? ????? ???? ??? ?? ???? ???? ?????? ?? ?????? ???? ?? ?????? ???? ???? ?? ??????? ???????? ?? ????? ??????? ??????? ? ??? ?????? ?????????? ????? ???? ?????? 70% ?? ???? ??????.
?? ?????? ???? ?????? ?? ?????? ?????? ???????? ???? ????? ??? ?? ????? (Thiry ???????b2002)? ????? ????? ??? (?? ????? ??? ???????) ???? ??????? ??? ??? ?????? ?? ??????? ?????? ???? ??? ????? ????? ?????? ??? ?????? ??? ??? ????? ??? ???? ???? ?? ????? ??????? ??? ??? ?? ?????? Donald? (1963) ?? ???? ??? ???? ????? ????? Monoculm. ?? ??????? ???? ???? ??? ??????? ??????? ?? ?????? ????? ????? ?? ?????? ?? ???????? ????????? ???????? ???? ????????? ??? ?????? ?? ?????? ?????? ??????? ?? ???????? ???? ?????? ?????.