ارزیابی عکس‌العمل تعدادی از ارقام و لاین‌های لوبیا Phaseolus vulgaris نسبت به نماتد ریشهگرهی، Meloidogyne javanica

Beans with almost 25 percent protein content, this crops plays an important role in providing needed human protein and among the pulses, beans has a special place and its protein is among the best plant proteins. Root-knot nematodes of the genus Meloidogyne, is the limiting factors for crops such as beans. By forbidding the use of fumigant Nematicides, nematode management using another approaches, entered into integrating resistant varieties with other ones and use of resistant cultivars were introduced as an appropriate method to combat pathogenic factors. In the present research, the resistance of some bean cultivars including Naz, Sayad, Dorsa and Almas and lines COS16, D81083, KS21191, KS31169 and KS21676 than root-knot nematode Meloidogyne javanica, were investigated. Pot for three months were kept in a greenhouse at a temperature of 22 to 26 degrees Celsius. Seed bean cultivars planted in pots two-Kg and two-leaf stage and then inoculated with about 3000 nematode eggs and second stage larvae per Kg of soil. The pots were arranged randomly in the greenhouse and irrigated regularly. 80 days after seed sowing in the greenhouse, plants uprooted, washed under mild water stream and the various characteristics for the plant and the nematode were recorded. The results indicated that the cultivars Almas, Dorsa, Naz and Sayad are tolerant to root-knot nematode Meloidogyne javanica and lines KS21676, KS21191, KS31169, COS16 and D81083 are susceptible to the nematode. The highest fresh weight of the shoot is related to the COS16 line. Sayad cultivar has the highest and D81083 line has the lowest number of seeds per pod. The number of seeds per trait is genotypic dependent and is largely independent of environmental factors. Environmental stresses affect the seed formation period. In this study, roots length was lower in infected treatments than healthy treatments. Root knot causing stunted long-term growth and rooting of the plant is induced by the root-root attack.