Genotypic variability and genotype by environment interactions for inulin content of Jerusalem artichoke germplasm |
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Authors: | Ratchanee Puttha Sanun Jogloy Preeya P Wangsomnuk Supalax Srijaranai Thawan Kesmala Aran Patanothai |
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Institution: | (1) Department of Plant Science and Agricultural Resources, Faculty of Agriculture, Khon Kaen University, Khon Kaen, 40002, Thailand;(2) Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand;(3) Department of Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand; |
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Abstract: | Genetic variations in germplasm and genotype × environment interaction (G × E) are important for crop improvement. The objectives
were to explore genetic variation in Jerusalem artichoke germplasm and to evaluate G × E interaction for inulin content. Seventy-nine
accessions of Jerusalem artichoke were evaluated in a randomized complete block design with two replications for three seasons.
Significant variation in inulin content (55.3–74.0% dry weight) was observed and the genotypes with high inulin content could
be identified although there was intermediate G × E interaction. Genotypes were also significantly different for days to maturity,
fresh tuber yield, biomass and harvest index and G × E interactions for these traits were also significant. The correlation
between inulin content and days to maturity was not significant (r = −0.20), whereas inulin content and fresh tuber yield were significantly associated (r = 0.22). JA 37 and CN 52867 are promising for high yield and inulin content. |
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