Growth characteristics and productivity of a new Cold‐Tolerant Italian Ryegrass (Lolium multi f lorum L .) variety .Kowinearly.in Northern part of South Korea

摘要

Italian ryegrass ( Lolium multi f lorum L.) has good productivity and high feed value of forage but its cultivation has been confined to southern part of South Korea because of its poor cold tolerance.Thus, in South Korea, improvement of cold tolerance in Italian ryegrass is very important to increase the productivity and to expand the cultivation area of Italian ryegrass.A cold‐tolerant variety.Hwasan 101., bred in Korea (Choi et al, 2000), was difficult to be used in cropping after rice harvest in northern part of South Korea because of its late‐heading (on about May 20).Therefore, it needs to breed an early‐maturing and cold tolerant variety of Italian ryegrass in South Korea.