Evaluation of 99 S1 lines of maize for inbreeding depression

The research was conducted to evaluate the performance of S1 lines for inbreeding depression regarding different parameters, using maize variety Azam. The maize variety was self-pollinated for one generation in spring season and in the next sowing season 99 S1 lines obtained from selfing was sown wi...

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Published inPakistan journal of agricultural sciences Vol. 47; no. 3; pp. 209 - 213
Main Authors Ahmad, M. (KPK Agricultural Univ., Peshawar (Pakistan)), Khan, S. (Agricultural Research Station, Mansehra (Pakistan)), Ahmad, F. (Agricultural Research Station, Mansehra (Pakistan)), Shah, N.H, Akhtar, N
Format Journal Article
LanguageEnglish
Published 2010
Subjects
CROP YIELD
EVALUATION
GROWTH
HEIGHT
INBREEDING DEPRESSION
MATURITY
POLLEN
PROGENY
STATISTICAL METHODS
YIELD COMPONENTS
ZEA MAYS
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Summary:The research was conducted to evaluate the performance of S1 lines for inbreeding depression regarding different parameters, using maize variety Azam. The maize variety was self-pollinated for one generation in spring season and in the next sowing season 99 S1 lines obtained from selfing was sown with a parental line. Days to silking, pollen-shedding, plant height, ear-height, ear-length, ear-diameter, number of ears/row, kernel rows/ear and 100 kernel weight showed inbreeding depression with varying degrees while yield kg/ha showed severe inbreeding depression with an average of 362.08 kg/ha. Average value of inbreeding depression for days to silking and pollen-shedding was calculated as 2.02 and 2.21 days, respectively. Average values of inbreeding depression for plant height and ear-height were recorded as 21.50 cm and 4.87 cm, respectively. While, for ear-length, ear-diameter, number of ears/row, kernel rows/ear and 100 grain weight, the average value of inbreeding depre
Bibliography:F30
CATPAK-74216
ISSN:0552-9034