Evaluation of resistance of some sugar beet genotypes to beet cyst nematode under greenhouse conditions

Rahmani, N.; Mesbah, M.; Norouzi, P.; Mahmoodi, S. B.

doi:10.22092/jsb.2009.972

Evaluation of resistance of some sugar beet genotypes to beet cyst nematode under greenhouse conditions

Document Type : Scientific - Research

Authors

¹ Ms. of agricultural biotechnology

² Professor of Seed and Plant Certification Institute, Karaj, Iran.

³ Assistant Professor of Sugar Beet Seed Institute (SBSI) - Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran.

10.22092/jsb.2009.972

Abstract

Resistance of 11 genotypes of sugar beet to cyst nematode was evaluated in two separate greenhouse experiments in completely randomized design. In each experiment, 50 seedlings of each genotype were inoculated with 1000 nematode larves in several times. After 9 weeks, the number of cysts on each plant was counted. Data were analyzed with SAS program. The results showed that the genotypes differed significantly in number of cysts on them in both experiments. Genotypes were classified into 3 groups: resistant, moderately susceptible and susceptible based onDuncanmethod at a = 0.01. W-1009,W-1010 and NEMAKIL were in resistant group, while Rasoul and some other hybrids were in susceptible group. Finally , it was found that greenhouse evaluation is a simple and efficient method for screening resistant genotypes and breeding lines and it can be used for 2-3 times in one year in greenhouse conditions.

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