Breeding progress and performance of wheat cultivars in different environments in Israel from 1970 to 2002
2004
Schwarzbach, E. | Atsmon, S.Y.
The behaviour of wheat cultivars in environments with different yield level and the progress of wheat breeding in Israel were investigated by a statistical exploration of 353 Regional Wheat trials, performed from 1970 to 2002. In the trials 125 experimental and commercial cultivars of Triticum aestivum, 11 of T. durum and one Triticale line were tested. The yield levels of trials ranged from 0.5 to 8.8 t/ha. The cultivars differed in grain yield by multiplicative factors that were well reproducible and highly correlated across environments. The best differentiation of cultivars, expressed as the ratio of genetic to residual variance, was found in high yielding environments. Cultivar yield was significantly associated with lodging resistance, short straw and low protein concentration. The breeding progress for yield was fast in the seventies, but only moderate in the last 10 years, with cv. Galil as the top yielder since 1996.
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