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Harnessing genotype × environment interaction and advanced selection indices for nutritional enhancement in taro
Vijay Bahadur Singh Chauhan1, Hanume Gowda Krishnappa1, Pinki Mohapatra1
1Regional Centre, ICAR-Central Tuber Crops Research Institute, Bhubaneswar 751019, Odisha, India.
Abstract:
The nutritional composition of taro was accessed to select nutritional-rich genotypes using, additive main-effects and multiplicative interactions (AMMI), weighted average absolute scores (WAAS), best linear unbiased prediction (BLUP), genotype plus genotype × environment interaction (GGE) biplots, and multi-trait selection index (MTSI). The AMMI1 and AMMI2 biplots identified 11CE, 1CE, and 13CE as stable genotypes. 13CE, 8CE, and 24CE are stable as per the WAAS biplot. Which-won-where/what model highlighted 24CE and 26CE as winners in E1, E3, and E4 environments. The genotypes, 16CE, 24CE, 10CE, 25CE, 10CE, 18CE, 22CE, 26CE, 1CE, and 14CE, have recorded high predicted BLUP for sugar (2.36 %), starch (60.81 %), protein (19.24 g/100 g), P (424.23 mg/100 g), K (1197.41 mg/100 g), Fe (17.89 mg/100 g), Cu (1.53 mg/100 g), Zn (13.78 mg/100 g), Mn (6.67 mg/100 g), and yield (12.04 t/ha), respectively. 13CE, 15CE, 7CE, and 8CE are selected based on MTSI values. Overall, 24CE, 8CE, 13CE, and 16CE are stable for nutritional contents.
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