National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Seventy five maize genotypes were evaluated to study the genetic divergence under two drought stress conditions i.e. moderate stress and severe stress along with well watered conditions. The experiment was carried out at Maize Research Centre, Rajendranagar, Hyderabad, during rabi 2011-12. The seventy five genotypes were grouped into nine distinct clusters. The cluster VII, cluster VIII and cluster VII were the largest and lowest genotypes were included in cluster II, cluster V and clusters V and IX under normal, moderate drought stress and severe drought stress conditions, respectively. The highest inter-cluster distance was observed between, cluster IV and VIII, V and VII and III and V under normal, moderate drought stress and severe drought stress conditions, respectively. Chlorophyll fluorescence and ear weight showed maximum contribution towards total divergence among different characters studied, in all the three water regimes. The cluster IV, cluster V and cluster III showed high mean values for plant height, ear length, ear weight, harvest index and grain yield under normal, moderate drought stress and severe drought stress conditions, respectively. The genotypes with wide genetic diversity can be utilized in future breeding programme to evolve drought tolerant hybrids to mitigate the adverse effects of climate change.
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