Yield and its components of diverse lentil genotypes grown under different edaphic and climate conditions A.N. Sharaan, S. A. N. Afiah, Ekram, A. Migawer.

الملخص EN

Eighteen lentil genotypes of diverse origin (including Sinai-1 as check variety) were evaluated in two locations differing mainly in soil, water supply and climatic conditions.

These were Fayoum (sandy loam soil and surface irrigation) and Maryout (calcareous soil depending on rainfall).

During the two experimentation seasons (2000 / 2001 and 2001 / 2002), using a randomized complete blocks design with three replicates, the genotypes were tested for variation, performance and suitability for growing under these stress and control (non-stress) environments.

Significant genotypic differences were detected for all recorded traits of each season and combined data over seasons at both locations which may due to their different genetic background.

Combined data revealed that season fluctuations, especially at Maryout, had marked effect on performance of the tested lentil genotypes.

Mean performance of all traits except number of Branches / plant, number of seeds / pod and seed protein content were higher under non-stressed (at Fayoum) than under stressed conditions (at Maryout).

Heritability estimates were the highest in seed protein content (96.75 %) at Fayoum, number of pods / plant (83.8 %) at Maryout and days to 50% flowering (> 93 %) at both locations.

The other traits showed moderate (at Fayoum) to high (at Maryout) estimates.

Minor discrepancies between phenotypic and genotypic coefficients of variability were observed suggesting the importance of genetic causes of variation in most studied traits and provide a chance for improving these materials by selection.

The tested genotypes were varied in their interaction with the prevailing environmental influences and exhibited different responses.

Most genotypes outyieled the check variety “Sinai-1’’.

The Argentinean type (no.

17) produced the highest yields of 688.1 and 302.3 kg / Fed.

at Fayoum and Maryout, respectively.

These genotypes followed by no.

16 and 15 as well as no.

5 and 14 (for non-stress) and followed by no.

16, 7 and 8 are recommended for growing under environmental stress conditions.