کوشا (KSC ۲۰۱) هیبرید جدید ذرت زودرس برای کشت در مناطق مختلف کشور به ویژه مناطق با محدودیت طول فصل رشد و آب آبیاری

Early maturing maize hybrid KSC ۲۰۱ is developed from a cross between S۶۱ and K۱۲۶۳/۱۷ inbred lines in ۱۹۹۶. In the semi-final trail in ۱۹۹۷,this hybrid with average grain yield of ۱۱.۱۸ tons/ha was selected as the superior hybrid in comparison with check cultivar. It was evaluated in final test in ۲۰۰۱ and ۲۰۰۲ in six locations and two growing seasons. Combined analysis of variance showed that KSC ۲۰۱ hybrid with an average grain yield of ۹.۹۸ tons/ha per hectare had ۱.۸ tons per hectare greater than check hybrid (KSC ۳۰۱), but was not significantly different from Fajr hybrid with average grain yield of ۱۰.۲۵ tons/ha. In ۲۰۱۲, again it was tested in preliminary yield trial in Karaj and Zarghan filed stations with Dehghan hybrid as check cultivar. Results showed that it had average grain yield of ۱۱.۸۵ tons/ha and was superior in comparison with the other hybrids and check cultivar. In ۲۰۱۴ and ۲۰۱۵ it was examined in adaptability trial in ۸ locations and two growing seasons. Combined analysis of variance showed that the new hybrid, “Kousha”, with average grain yield of ۱۱.۳۷ tons/ha and suitable adaptability was one of the superior hybrids. Kousha (KSC ۲۰۱) hybrid and it parental lines were evaluated and identified as moderately resistant to smut and fusarium ear rot. It was also evaluated under farmers’ conditions in two regions of Kermanshah province and showed that this hybrid was at least ۳۰ days earlier than KSC۷۰۴. It's grain moisture at harvest time, very important factor, was more than ۱۵% less than the check cultivar. Considering its early maturity, it needs at least ۴۰۰۰-۳۰۰۰ cubic meters less irrigated water.

کلیدواژه ها:

ذرت ، لاین ، آزمایشات نیمه نهایی ، زودرس ، عملکرد دانه