Genotype by environment interaction effects on rhizome yield and quality in ginger (Zingiber officinale Rosc.)

Nirmal Babu; K; Sial; P; Chandrasekhar Rao; C; Sharma; Happy Dev; Singh; S.P. Pandey; V.P; Bandyopadhyay; S; Singh; V; Jha; A.K.

Volume : VII, Issue : XII, December - 2018

Genotype by environment interaction effects on rhizome yield and quality in ginger (Zingiber officinale Rosc.)

Nirmal Babu, K, Sial, P, Chandrasekhar Rao, C, Sharma, Happy Dev, Singh, S. P. Pandey, V. P, Bandyopadhyay, S, Singh, V, Jha, A. K.

Abstract :

Six cultivars of ginger were evaluated for fresh rhizome yield , dry recovery per cent , essentiall oil and oleoresin per cent in eight different environments like Barapani, Chintapalli, Kalyani, Mizoram, Passighat, Pottangi, Pundibari and Solan across India ranging from 43 to 943m above mean sea level from 2009 to 2012. Combined analyses showed significant differences among cultivars, environments and cultivar by environment interaction for fresh rhizome yield, per cent of dry recovery, essential oil and oleoresin contents. A large proportion of variation on fresh ginger rhizome yield per ha was attributed to environments, however, variation due to genotypic effect for dry recovery per cent , oleoresin and essential oil per cent accounted for 31.78%, 99.86% and 92.78%, respectively. Oleoresin and essential oil per cent in ginger were highly inherited characters and less influenced by environments. Varada ginger was the most stable genotype for fresh rhizome yield with above average yield across all the environments. Rejitha was performing well at specific locations as the fresh rhizome yield was the highest and was highly responsive to favourable environment. Passighat was most favourable environment among all for fresh rhizome yield (19.36t/ha). Himgiri showed good stability (b= 1.083), high mean and less deviation from regression that it was stable for dry recovery per cent across the locations. Mahima and Himgiri had average mean with b=1.17 and –0.94 and less non–significant deviation from regression were stable for oleoresin per cent across the locations. Suprabha and Suravi had regression coefficient near to one, high mean and less deviation , predicted that they are stable for essential oil per cent across the location. Four varieties like Himgiri, Mahima, Suprabha and Suravi could serve as a good genetic source for dry ginger, oleoresin and essential oil content in ginger.