Occurrence of Root-knot Nematode on Dendranthema x grandiflorum and Influences on Plant Growth

Kim, Dong Geun; Kim, Hyun Seok; Kim, Seung Han; Lee, Jung Hwan; Yoon, Jae Tag

Research in Plant Disease 2004;10(1):25-29.
Published online March 30, 2004.

국화의 뿌리혹선충 피해 발생 및 생육에 미치는 영향

김동근, 김현석, 김승한, 이중환, 윤재탁

Occurrence of Root-knot Nematode on Dendranthema x grandiflorum and Influences on Plant Growth

Dong Geun Kim, Hyun Seok Kim, Seung Han Kim, Jung Hwan Lee, Jae Tag Yoon

Abstract

Over 98% of Dendranthema x grandiflorum plants growing under a glasshouse in Gumi, Korea were infested with Meloidogyne hapla. Dendranthema x grandiflorum cv. ``Ardilo`` had fewer eggmass (3.3/g root), followed by cv. ``Euro`` (6.5), and cv. ``Monarisa`` had the most eggmasses(17). The coefficient correlation between plant growth and nematode reproduction(number of eggmass per plant) indicated that nematode reduced chlorophyll content in leaf (r = -0.418, p = 0.059; r = -0.463, p = 0.040). Number of flowers, number of leaves and stem height to flower were positively correlated with flower weight(p < 0.05).

Key Words: Dendranthema x grandiflorum, Meloidogyne hapla, Rot-knot nematodes, SPAD