| Pak. J. Bot., 39(1): 67-71, 2007. | Back to Contents | ||||
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Updated: 09-07-09 | ||||
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WIDE AND SPECIFIC ADAPTATION OF BREAD WHEAT INBRED LINES FOR YIELD UNDER RAINFED CONDITIONS A. J. KHAN*, F. AZAM, A. ALI, M. TARIQ, M. AMIN AND T. MUHAMMAD Abstract: Ten elite wheat inbred lines / cultivars were tested for grain yield
stability at five different locations under the rainfed conditions in
the North West Frontier Province of Pakistan. These inbred lines were
exposed to different soil types, soil fertility, moisture levels and
temperatures. GxE interaction mean squares were highly significant for
grain yield. The overall mean grain yield performance of genotypes across
environments ranged from 2.88 to 3.89 t/ha. The stability parameters
indicated regression coefficient (bi) value ranging from 0.87 in NRL-9293
to 1.20 in NRL-0306. Cultivar "Tatara" showed the ideal stable
performance with regards to mean grain yield of 3.32 t/ha, regression
coefficient value of 1.03 and dispersion value (S2d) of 0.03.
Based on bi and S2d values, NRL-0306 was found suitable for
favorable environments whereas NRL-9293 can perform well under unfavorable
environments.
Nuclear Institute for Food and Agriculture (NIFA), Tarnab, Peshawar,
Pakistan. |
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