Relationships between morphological features of inflorescence and capsule borer incidence in castor
Relationships between morphological features of inflorescence and capsule borer incidence in castor
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Authors
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R SATHISHKUMAR
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad- 500 030
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P DURAIMURUGAN
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad- 500 030
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T MANJUNATHA
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad- 500 030
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S SENTHILVEL
ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad- 500 030
Keywords:
Bloom, Capsule borer, Castor, Spike compactness, Spine on capsuleAbstract
The association of morphological features of inflorescence viz., presence/absence of spine on the capsule, presence/absence of bloom and compactness on the incidence of capsule borer was studied in breeding populations segregating for these traits. The spine and bloom on capsules were significantly correlated with per cent capsule damage whereas weak correlation was observed between spike compactness and pest incidence. Castor genotypes with non-spiny capsules and less or no bloom are expected to be less prone to capsule borer damage.
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References
Lakshminarayana M (2005) Studies on antixenosis in castor, Ricinus communis L., against majorinsect pests. Indian Journal of Plant Protection33: 216-219.
Vorhees JF (1926) A graphic and tabular aid to interpreting correlation coefficients. Monthly Weather Review 54(10): 423–423.
