Variability and interrelationships of eight quantitative characters in bread wheat (Triticum aestivum L.) [in Bangladesh]
1990
Barma, N.C.D. | Khan, S.H. | Mian, M.A.K. | Islam, A. (Bangladesh Agricultural Research Inst., Gazipur (Bangladesh). Regional Agricultural Research Station, Ishurdi, Pabna)
A field experiment with twenty two varieties/lines of wheat (T. aestivum L.) was conducted at Regional Agricultural Research Station, Ishurdi, Pabna during 1985-1986. Variability and interrelationships among eight agronomic traits were studied. All the characters showed significant variation. Number of ears/plant, grains/ear, and grain yield/plant showed a wide range of variation indicating the possibilities of selecting better genotypes. Moderate to high heritability with moderate genetic advance under selection was observed for days to heading, plant height, number of ears/plant grains/ear and 1000 grain weight. Grain yield/plant correlated positively with number of ears/plant, ear length, grains/ear and 1000 grain weight but the association of this trait with days to heading and days to maturity was negative. Days to heading showed negative correlation with 1000 grain weight indicating the importance of heading to maturity period for larger grain size. Number of ears/plant correlated positively with days to maturity and ear length but negatively with number of grains/ear. The correlation between ear length and grains/ear was very high and positive.
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