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Estimation of genetic diversity in sorghum genotypes of Pakistan

Authors:

Aamer Mumtaz ,

Maize and Millet Research Institute, PK
About Aamer
Sorghum Breeding Section
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Dilbar Hussain,

Maize and Millet Research Institute, PK
About Dilbar
Sorghum Breeding Section
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Muhammad Saeed,

Maize and Millet Research Institute, PK
About Muhammad
Sorghum Breeding Section
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Muhammad Arshad,

Maize and Millet Research Institute, PK
About Muhammad
Sorghum Breeding Section
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Muhammad Irfan Yousaf

Maize and Millet Research Institute, PK
About Muhammad
Sorghum Breeding Section
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Abstract

Livestock and poultry production is increasing steadily in Pakistan but the production of poultry feed, cattle feed and fodder is not increasing at the same rate, and Pakistan is now facing a shortage of quality fodder and poultry feed. Sorghum is a good alternative to meet the growing fodder and poultry feed requirements. The major barrier in enhancing sorghum production is the lack of sufficient information on the genetic diversity of sorghum genotypes in Pakistan. In this study 30 sorghum genotypes from the gene pool maintained by the Maize and Millet Research Institute, Yusafwala, Sahiwal, Pakistan were sown in 2015 in a randomised complete block design. Morphological data such as days to 50 % anthesis, plant height, flag leaf area, brix percentage, panicle length, 1000 grain weight and grain yield were recorded. Data were evaluated for statistical significance using principal component analysis (PCA) and cluster analysis. A highly significant variation was observed among the genotypes. The percentage coefficient of variation in all traits was less than 10 %, which showed that uncontrolled variation was highly unlikely. A close correlation was seen between flag leaf area and grain yield, days to 50 % anthesis and 1000 grain weight, and between panicle length and brix value. Flag leaf area, grain yield and 1000 grain weight indicated the least contribution to the total genetic diversity. The contribution of PC1, PC2 and PC3 was 64.5 % of total variation. According to PCA and cluster analysis genotype YS-9 was important for the character days to 50 % anthesis; genotype YS-22 for grain yield and flag leaf area; genotype YS-27 for plant height; genotype YS-10 and genotype YS-7 for panicle length; and genotype YS-12 for brix value.

How to Cite: Mumtaz, A., Hussain, D., Saeed, M., Arshad, M. and Yousaf, M.I., 2018. Estimation of genetic diversity in sorghum genotypes of Pakistan. Journal of the National Science Foundation of Sri Lanka, 46(3), pp.271–280. DOI: http://doi.org/10.4038/jnsfsr.v46i3.8479
Published on 30 Sep 2018.
Peer Reviewed

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