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volume 32 issue 1 (march 2009) : 46-50
EVALUATION OF PIGEONPEA GENOTYPES FOR MORPHO-PHYSIOLOGICAL TRAITS RELATED TO DROUGHT TOLLERANCE
1Pulses Improvement Project, Mahatma Phule Krishi Vidhyapeeth,
Rahuri-413 722, India
ABSTRACT
Ten pigeonpea genotypes were grown under moisture stress condition in rainout shelter and
irrigated condition separately for evaluating morpho-physiological traits associated to drought
tolerance in kharif 2006. The genotype JSA 59 was identified for highest seed yield under moisture
stress (476 kg/ha) as well as irrigated (1413 kg/ha) conditions. It also showed low reduction in yield
(66.31%) due to moisture stress as well as high DTE (33.69%) and low DSI (0.585). The relative leaf water content (RLWC) under moisture stress condition was highest in JKM 189 (40.71%) followed by BDN 2009 (39.92%) and TTB 7 (39.39%). There was a great variation for membrane injury index. It was lowest in JKM 204 (0.15) and JSA 59 (0.26). PT 02-9 having lowest membrane injury index (0.13) and lowest rate of water loss (0.223 mg/min), but low seed yield under moisture stress (122 kg/ha) as well as stress free condition (778 kg/ha). TTB 7 was marked by high biomass and its distribution in component parts of plant under stress as well as stress free condition. The genotypes JSA 59 and TTB 7 were also characterized by higher number of pods per plant and seed yield/plant under moisture stress as well as stress free condition. In addition to this, JSA 59 had higher harvest index under moisture stress (17.10%) as well as stress free condition (20.86%). Therefore, JSA 59 and TTB 7 wererated as most promising type for drought tolerance.
irrigated condition separately for evaluating morpho-physiological traits associated to drought
tolerance in kharif 2006. The genotype JSA 59 was identified for highest seed yield under moisture
stress (476 kg/ha) as well as irrigated (1413 kg/ha) conditions. It also showed low reduction in yield
(66.31%) due to moisture stress as well as high DTE (33.69%) and low DSI (0.585). The relative leaf water content (RLWC) under moisture stress condition was highest in JKM 189 (40.71%) followed by BDN 2009 (39.92%) and TTB 7 (39.39%). There was a great variation for membrane injury index. It was lowest in JKM 204 (0.15) and JSA 59 (0.26). PT 02-9 having lowest membrane injury index (0.13) and lowest rate of water loss (0.223 mg/min), but low seed yield under moisture stress (122 kg/ha) as well as stress free condition (778 kg/ha). TTB 7 was marked by high biomass and its distribution in component parts of plant under stress as well as stress free condition. The genotypes JSA 59 and TTB 7 were also characterized by higher number of pods per plant and seed yield/plant under moisture stress as well as stress free condition. In addition to this, JSA 59 had higher harvest index under moisture stress (17.10%) as well as stress free condition (20.86%). Therefore, JSA 59 and TTB 7 wererated as most promising type for drought tolerance.
REFERENCES
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- Deshmukh D.V. et al. (2004). Indian J. Pulses Res.; 17(1):47-49.
- Donald, C.M. (1962). Inst. Agril. Sci.; 28:171-178.
- Fischer, K. S. and Wood. (1981). In: Proceedings of Symposium on ‘Principles and Methods in Crop Improvement for
- Drought Resistance with Emphasis on Rice’ (Fisher, K. S. et al Eds)., IRRI, Phillipines; May, 1981.
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- Gupta S.N. et al. (1995). HAU Res. J. 25(1):49-52 6.
- Kramer P. J. (1983). Water Deficits and Plant Growth. Water Relations of Plants. pp. 342-389.
- Singh, K.N. (2003). Abstracts: ‘National Symposium on Pulses for Crop Diversification and Natural Resource Management (NPS 2003)’ held at IIPR, Kanpur on 20-22nd Dec., 2003: ABS 10: 268.
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Published In
Legume Research