REGRESSION OF GENOTYPE × ENVIRONMENT INTERACTION FOR SOME JEW'S MALLOW ECOTYPES (Corchorus olitorius L.). | ||||
| Journal of Plant Production | ||||
| Article 7, Volume 1, Issue 9, September 2010, Page 1251-1262 PDF (614.01 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jpp.2010.86578 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| S. A. M. Abd-Allah; H. M. M. Ghobary; Amal Z. Hegazi | ||||
| Veg. Res. Dep., Hort. Res. Inst., Agric. Res. Center, Giza, Egypt. | ||||
| Abstract | ||||
| The present study was carried out during the two successive summer seasons of 2008 and 2009 at three locations, i.e.; a) farm of Sabahia Horticultural Research Station, Alexandria; b) Kaha (Kalyiobia governorate) Horticulture Research Station; and c) farm of Baramoon Horticultural Research Station, Mansoura, Egypt. Sowing was done on three different dates, i.e., a) mid of April, b) mid of May, and c) mid of June. The genetic materials used in this study included six ecotypes of jew's mallow, which were collected from different regions of Egypt in addition to the "Eskandarany" as a check cultivar. This work was designed to measure regression of genotype × environment interaction of the studied genotypes of Jew’s mallow under different locations and sowing dates using Eberhart and Russell's approach (1966). It was found that the seven genotypes of jew's mallow clearly differed in all studied traits. Mean square for fresh leafy yield and its components of the seven genotypes of jew's mallow showed dependence on the environmental mean effects. These results suggested that the genotypes tended to rank differently when grown at different location on different sowing date. The analyses of variance for stability showed highly significant differences among the seven Jew's mallow genotypes for all studied characters. The regression analysis, the (bi) statistics, was estimated with a significant and larger than one value (i.e., bi>1) in El-Esma'aellyia, Bani Sweef, Sohag, Siwi, and Sharkeia ecotypes for total fresh leafy yield. Such results seemed to indicate that these genotypes could reflect higher response potentials in the mentioned character under the more favorable environment, which was sowing the mentioned genotypes in Kalyiobia on mid of April. | ||||
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