Refine your search
Collections
Co-Authors
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All
Singh, D.
- Genetic Hybridization among Genotypes of Taro (Colocasia esculanta) and Recurrent Selection for Leaf Blight Resistance
Abstract Views :557 |
PDF Views:111
Authors
Affiliations
1 Queensland University, Saint Lucia, Brisbane, AU
2 University of New Brunswick, Department of Biology, Saint John, NB, CA
3 National Agricultural Research Institute, Lae, Papua Niugini, AU
1 Queensland University, Saint Lucia, Brisbane, AU
2 University of New Brunswick, Department of Biology, Saint John, NB, CA
3 National Agricultural Research Institute, Lae, Papua Niugini, AU
Source
Indian Journal of Science and Technology, Vol 3, No 1 (2010), Pagination: 96-101Abstract
Twenty six genotypes selected from the progeny of cycle-3 recurrent selection on the basis of having 10 suckers or more were screened for taro leaf blight (TLB) resistance using in vitro leaf-disc method which detected six genotypes with durable resistance. Field evaluation of the 26 genotypes, compared to the local control cultivar "Numkowec", on the bases of TLB horizontal resistance, high comparable yield (dry matter, corm and cormel weight etc.) and good eating quality identified three superior genotypes, C3-10, C3-12 and C3-22. The three genotypes showed durable resistance to TLB and Coefficient of Infection (CI) = 20, 50 and 80 compared to CI=240 for the local control cultivar "Numkowec". In a different study, the adaptability of the three genotypes were assessed in a range of agro-ecological locations and recommended for release. The breeding program was further advanced to generate cycle-4 population by performing 85 selective partial diallel crosses among the 26 genotypes. Crosses amongst the 26 genotypes were limited to those which flowered naturally or under the effect of gibberillic acid (GA). Various degrees of natural flowering occurred in 58% of the population; however, flowering was enhanced to 82% following the application of 0.5 gl-1 GA. Crosses among the remaining 23 genotypes were carried out by other workers following the same procedure. A total of 6000 vigorous seedlings generated from bulked progeny seeds of all crosses involving the 49 genotypes, were identified out of more than 10,000 seedlings, and transplanted to the field, constituting cycle-4 progeny population. A preliminary field evaluation of the population's flowering ability, resistance to TLB and agro-morphological characteristics was carried out. A total of 237 genotypes with large size and non-deformed corms with no or little hair were initially chosen for further selection in a range of agro-ecological locations and release of elite lines, which will constitute the parental lines for cycle-5 recurrent selection population.Keywords
Colocasia esculanta, Recurrent Selection, Taro Leaf BlightReferences
- Alamu S and McDavid CR (1978) Promotion of flowering in edible aroids by gibberellic acid. Trop. Agric. (Trinidad) 55, 81-86.
- Cable WJ (1979) Flower promotion in taro. Alafua Agric. Bullet. University of the South Pacific. 4, 6-7, 14-16.
- Clerge le EL (1966) Significance of experimental design in plant breeding. In: Symp. on Plant Breeding held at Iowa State Univ. Keneth JF (ed). State Univ. Press. Ames. pp: 243-302.
- Goenaga R and Hepperly P (1990) Flowering induction, pollen and seed viability and artificial hybridization of taniers (Xanthosoma spp.). J. Agric. Univ. P. R. 74(3), 253-260.
- Hay A (1990) Aroids of Papua New Guinea. CRI Publication No. 10. Kristen Press Inc. Madang, Papua New Guinea.
- Ivancic A (1992) Genetics and Breeding of Taro (Colocasia esculenta (L.) Schott. Final report. UNDP/UNV/FAO/Ministry of Agri. & Lands, Honiara, Solomon Islands.
- Ivancic A (1995) Abnormal and Unusual Inflorescences of Taro Colocasia esculenta (Araceae). Aus. J. Botany 43,475-489.
- Ivancic A and Lebot V (1998) Genetics and breeding of taro (Colocasia esculenta (L.) Schott). TANSAO (Taro Network for Southeast Asia and Oceania).
- Ivancic A and Okpul T (1996) A new mutation of taro (Colocasia esculenta) observed at Bubia Agricultural Research Centre. PNG J.Agri. Forestry Fish. 39 (2), 6-9.
- Ivancic A and Okpul T (1997) The importance of wild germplasm for taro (Colocasia esculenta) breeding. In: Proc. of the 1st Congress of the Genetics Soc. of Slovenia, Sept. 2-5, Ljubljana, Slovenia. pp: 83–84.
- Ivancic A, Simin A and Tale Y (1996) Breeding for flowering ability and seed productivity of taro. Proc. of the 2nd Taro Symp. Jackson GV & Wagih ME (eds). Cenderawasih Univ. and Papua New Guinea Univ. of Technol., Lae, Papua New Guinea. pp: 53-57.
- Lebot V, Simeoni P and Jackson G (2001) Networking with food crops: a new approach in the Pacific? In: Plant genetic resources in the Pacific: towards regional cooperation in conservation and management. Wells KF & Eldridge KG (eds). ACIAR Monograph. 76. pp: 82-85.
- McDavid CR and Alamu S (1976) Promotion of flowering in tannia (Xanthosoma sagittifolium). Trop. Agric. (Trinidad) 53, 373-374.
- Okpul T (1998) Taro (Colocasia esculenta) Breeding in Papua New Guinea. Paper presented at the first TANSAO meeting in Lae, Papua New Guinea, March 4-6.
- Okpul T, Ivancic A and Simin A (1997) Evaluation of leaf blight resistance taro (Colocasia esculenta) varieties for Bubia, Morobe Province, Papua New Guinea. Papua New Guinea J. Agri. Forestry Fish. 40, 13-18.
- Plucknett DL, de la Pena RS and Obrero FP (1970) Taro (Colocasia esculenta L. Schott): A Review. Field Crop Abstracts. 23(4), 413-426.
- Robinson R (1996) Return to resistance. Ag Acess, Davis, California.
- Singh D and T Okpul (2000) Evaluation of 12 taro (Colocasia esculenta (L.) Schott) leaf blight resistant lines for yield and eating quality in Papua New Guinea. SABRAO J. Breeding & Genetics. 32(1), 39- 45.
- Singh RK and Singh M (1983) Numerical analysis of half diallel. In: Proc. of the 4th Intnl. SABRAO Congress, 4-8 May, Kuala Lumpur. Yap TC, Graham KM & Sukaimi J (eds). pp: 99-103.
- Strauss MS, Michaud JD and Arditti J (1979) Seed storage and germination and seedling proliferation in taro, Colocasia esculenta (L.) Schott. Ann. Botany 43, 603-612.
- Strauss MS, Stephens GC, Gonzales CJ and Arditti J (1980) Genetic variability in taro, Colocasia esculenta (L.) Schott (Araceae). Ann. Botany. 45, 429-437.
- Wilson JE (1981) Effects of formulation and method of applying gibberellic acid on flower promotion in cocoyam. Expl. Agric. 17, 317-322.
- Wilson JE (1984) Taro and cocoyam: what is the ideal plant type? In: Edible aroids. Chandra S (ed). Oxford Univ. Press. Oxford. pp: 151–159.
- Fusion in Multimodal Biometric System: A Review
Abstract Views :223 |
PDF Views:0
Authors
Affiliations
1 Department of Computer Science and Engineering, I.K. Gujral Punjab Technical University, Kapurtala – 144603, Punjab, IN
2 Department of CSE, Chandigarh Group of Colleges, Landran – 140307, Punjab, IN
3 Department of CSE, Chandigarh College of Engineering and Technology, Chandigarh – 160019, IN
1 Department of Computer Science and Engineering, I.K. Gujral Punjab Technical University, Kapurtala – 144603, Punjab, IN
2 Department of CSE, Chandigarh Group of Colleges, Landran – 140307, Punjab, IN
3 Department of CSE, Chandigarh College of Engineering and Technology, Chandigarh – 160019, IN