Genotype-environment interaction and phenotypic stability analyses of straw yield in flax (LINUM USITATISSMUM L., ) [electronic resource].

Includes reference.

The material used for the present study consists of twelve flax genotypes viz Giza 8 Sakha1, Sakha2,Sakha3, Marlin, Escalina, S.533/39/5/11, 5420/140/5/11, 5.413/1/3/2, 5.426/32/6/5, S.435/11/10/3 and 5.421/3/6/5. They were evaluated over 12 environments, (two locations Le., Etay EI-Baroud Res. Station, Behera governorate and EI-Gemmeiza Res. Station, Gharbia governorate),in three sowing date, in two seasons. The first experiment with the sowing data on October 25th, the second one was occurred on November 10th (control) and the third trial was sown oin November 25th in two seasons, (2006/07) and (2007/08). The study was carried out using a randomized complete blocks design (RCBD), and stability parameters were estimated for Straw yield. The data of mean squares showed that the environmental effects were more important than genotypes and environment x genotype interaction effects on straw yield of flax. The Genotype,S 421 / 3 / 6 / 5 would considered as adapted genotype across a wide range of environments with respect to straw yield also the varieties, 5akha 2, Sakha 3 and Scalina considered as stable genotypes across a wide range of environments. The line, S 436/3/6/5 considered as adapted genotype. The genotypes, Sakha 1, Marlin and 5 533/39/5/11 were more sensitive to any change in the environment and considered as haigh-yielding environments and the genotypes, Giza 8, 5 420/140/5/11, 5 413/1/3/2, S 426/32/6/5 and S 435/11/10/3 appeared to be more adapted to poorer environments.

Summary in Arabic.

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