Morphological diversity valuation of exotic and advanced lines of bread wheat (Triticum Aestivum L.) via multivariate analysis

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Research Paper 01/08/2018
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Morphological diversity valuation of exotic and advanced lines of bread wheat (Triticum Aestivum L.) via multivariate analysis

Muhammad Zulkiffal, Saima Gulnaz, Javed Ahmed, Aziz ur Rehman, Muhammad Musa, Muhammad Abdullah, Muhammad Makky Javaid, Jaffar Salim
Int. J. Agron. Agri. Res.13( 2), 136-143, August 2018.
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Morphological diversity assessment of 28 exotic and 8 advanced lines was carried out.The data of 12 different traits were subjected to different multivariate techniques. The correlation analysis revealed heavier positive correlation among 1000 grain weight with the yield, spikelet spike-1, Normalized vegetation index (NDVI) and negative correlation with spike length, days to heading and maturity. NDVI and CTD (Canopy temperature depression) at booting stage revealed positive correlation with NDVI and CTD at anthesis stage. CTD and NDVI is a good indicator of a genotype’s fitness against heat stress environment and this trait may be used as selection tools for developing heat and drought stress tolerant genotypes. Principal component analysis showed first 5 PCs having eigen value >1 explaining 78.1% of the total variability. The lines speared into 4 clusters. Cluster 1, 2, 3 comprised of exotic lines while all varieties in cluster 4 comprised of advanced lines. Therefore, the traits of the exotic lines should be used in advanced lines and vice versa during crossing schemes. Plot and tree diagrams demonstrated adequate diversity among the accession for various traits and some extent of association between different clusters. In all described entries disease reaction (leaf and yellow rust) ranged from 0-100S.The results concluded that morphological diversity in the deliberate material is planned by genotypes and this diversity could be utilized for further breeding of exotic lines with advanced lines to cope with climate change mitigation and food security.


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