Physico-chemical traits of Cajanus cajan (L.) Millsp. pod wall affecting Melanagromyza obtusa (Malloch) damage

Physico-chemical traits of Cajanus cajan (L.) Millsp. pod wall affecting Melanagromyza obtusa (Malloch) damage

Pigeonpea [Cajanus cajan (L.) Millsp.] is an important legume crop in the semi-arid tropics, and pod fly [Melanagromyza obtusa (Malloch)] is an important emerging constraint to increase the production and productivity of this crop under subsistence farming conditions. Host plant resistance can be us...

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Bibliographic Details
Published in:Euphytica Vol. 161; no. 3; pp. 429 - 436
Main Authors: Moudgal, R. K, Lakra, R. K, Dahiya, B, Dhillon, M. K
Format: Journal Article
Language:English
Published: Dordrecht Dordrecht : Springer Netherlands 01-06-2008
Springer Netherlands
Springer
Springer Nature B.V
Subjects:
Agronomy. Soil science and plant productions
Biological and medical sciences
Biomedical and Life Sciences
Biotechnology
Cajanus cajan
chemical constituents of plants
crude fiber
Fundamental and applied biological sciences. Psychology
Genetics
Genetics and breeding of economic plants
Genotypes
Insects
Legumes
Life Sciences
Melanagromyza obtusa
pest resistance
Phenols
pigeon peas
plant anatomy
Plant Genetics and Genomics
Plant growth
Plant Pathology
Plant Physiology
Plant resistance
Plant Sciences
pod wall thickness
pods
Studies
Subsistence agriculture
Tannins
trichomes
Tropical environments
Biochemical traits
Pod wall
Morphological traits
Pigeonpea
Pod
Biochemical property
Insecta
Melanagromyza obtusa
Agromyzidae
Cajanus cajan
Grain legume
Leguminosae
Melanagromyza
Arthropoda
Dicotyledones
Morphology
Angiospermae
Genetic improvement
Spermatophyta
Invertebrata
Damage
Diptera
Physicochemical properties
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Summary:Pigeonpea [Cajanus cajan (L.) Millsp.] is an important legume crop in the semi-arid tropics, and pod fly [Melanagromyza obtusa (Malloch)] is an important emerging constraint to increase the production and productivity of this crop under subsistence farming conditions. Host plant resistance can be used as an important tool for the management of this pest. Therefore, a set of ten pigeonpea genotypes from a diverse array of plant growth types and maturity groups including two appropriate commercial checks, was evaluated for resistance to pod fly under field conditions, and characterized for physico-chemical pod traits. The non-determinate type GP 75 (extra early maturing) and GP 118 (early maturing), and determinate type GP 233 (extra early maturing) and GP 253 (early maturing) genotypes had significantly lower pod and seed damage as compared to determinate (Prabhat) and non-determinate (Manak) early maturing checks, suggesting that resistance to pod fly is not linked to plant growth type and maturity period of the genotype in pigeonpea. Pod wall thickness, trichome density, reducing and non-reducing sugars, total phenols, tannins, and crude fiber were found to be negatively associated (r = -0.83** to -0.97**), while total protein positively associated (r = 0.88** to 0.97**) with pod fly infestation. Therefore, these traits particularly total phenols, tannins, crude fiber, trichome density, and pod wall thickness, can be used as physico-chemical markers to identify pigeonpea genotypes with resistance to M. obtusa, and use in pod fly resistant breeding program in pigeonpea.
Bibliography:http://dx.doi.org/10.1007/s10681-007-9601-5
ISSN:0014-2336
1573-5060
DOI:10.1007/s10681-007-9601-5