Mechanism of resistance to Aceria cajani in pigeonpea.

Reddy, M V and Sheila, V K and Murthy, A K and Padma, N (1995) Mechanism of resistance to Aceria cajani in pigeonpea. International Journal of Tropical Plant Diseases, 13 (1). pp. 51-57. ISSN 0254-0126

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Abstract

Leaf anatomy was studied in relation to resistance to Aceria cajani, the vector of pigeonpea sterility mosaic virus in 7 lines of pigeon peas. The leaf cuticle and epidermal cell wall were 50-100% thicker in resistant lines than in susceptible lines. In the resistant lines, cuticle thickness was 3.79 µm in ICP 7035 and 3.03 µm in ICP 8862. In the susceptible lines it was 1.89 µm in C 11, 1.52 µm in BDN 1 and 2.27 µm in ICP 8863. The cuticle thickness in the moderately resistant lines ICP 2376 (1.89 µm) and ICP 10976 (2.27 µm) was similar to that of the susceptible lines. When measured, the stylet length of A. cajani was less than the leaf cuticle thickness of the resistant lines. Resistance was, therefore, attributed to the thick cuticle of resistant lines through which the mite vectors could not penetrate into the living epidermal cells to transmit the pathogen.

Item Type:	Article
Divisions:	UNSPECIFIED
CRP:	UNSPECIFIED
Subjects:	Mandate crops > Pigeonpea
Depositing User:	Mr Charan Sai Ch
Date Deposited:	06 Dec 2011 13:17
Last Modified:	06 Dec 2011 13:17
URI:	http://oar.icrisat.org/id/eprint/3260
Official URL:
Projects:	UNSPECIFIED
Funders:	UNSPECIFIED
Acknowledgement:	UNSPECIFIED
Links:	Author

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