tailieunhanh - Screening of tomato genotypes for root knot nematode (Meloidogyne incognita Kofoid and White Chitwood)

A study was conducted to evaluate the reaction of tomato genotypes to root knot nematode (Meloidogyne incognita race - 3) and the nematode reproduction were studied in the nematode infested pot culture experiment. Forty tomato genotypes were subjected for screening. At 65 days after nematode inoculation, whole plants were uprooted, washed and ranked for root galling and egg mass indices on a 1 to 5 scales. The plant growth responses viz., root length, root dry weight and nematode reproduction in term of number of galls per gram of root system, gall index, egg masses, eggs per egg mass, and second stage juveniles per 200-cm3 of soil were recorded. The field experiment revealed that M. incognita was able to induce root galling and reproduced on all the forty tomato genotypes screened. All the tomato genotypes show varying degree of response. | Screening of tomato genotypes for root knot nematode Meloidogyne incognita Kofoid and White Chitwood

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