Screening and histopathological changes of Korean carrot lines for resistance to root-knot nematodes in different soil textures

Meloidogyne incognita;Meloidogyne hapla;Daucus carota var. sativa Dc.;breeding;soil texture;630

농업생명과학대학 농생명공학부 ;

University:서울대학교 대학원

关键词: Meloidogyne incognita;    Meloidogyne hapla;    Daucus carota var. sativa Dc.;    breeding;    soil texture;    630;   

Others  :  http://s-space.snu.ac.kr/bitstream/10371/125992/1/000000141281.pdf

美国|英语

来源: Seoul National University Open Repository

【 摘 要 】

however, for M. hapla, the disease severity was highly elevated in 100% sandy soil even though there was no significant difference in the penetration rate among different soil textures. These results imply that the reason of severe damages reported in sandy soils by the root-knot nematodes may be due to the increased penetration rates of M. incognita in carrots probably by the increased porosity in sandy soil that enhances the mobility of the nematode, but due to the increased growth and reproduction after the penetration of M. hapla probably by the soil conditions favorable for root growths to provide better nutritional materials for the nematode. Screening of the carrot lines for resistance to the nematodes in this sandy soil texture may maximize the root-knot galling and the nematode reproduction rate, which is useful for the powerful selection of carrot lines with a strong resistance.