Feeding effects of the honeybee pollen products from both domestic, China, Spain and mixture of different origin on the colony development of earth bumblebee, Bombus terrestris L., were surveyed to evaluate efficient nutritional resources for commercial bombiculture in Korea. As the results, the domestic pollen was most effective to achieve high rates of oviposition (88%), colony foundation (70%), and queen production. While feeding with domestic pollens during the egg-laying period, and domestic+Chinese mixture (5:2) during the breeding period (Plot-2), it revealed high oviposition rate of 75%, colony foundation of 65%, and large numbers of adult queen production, indicating its suitability for generation subculturing. In the Plot-3, the same high oviposition rate (75%) was obtained except for feeding with the domestic+Chinese mixture (2:5) during the breeding period, which produced large number of workers.

꼭지매미충(Macrosteles striifrons)은 각종 농작물을 가해하고 식물병원균을 매개하며 동부아시아 지역에 널리 본포하고 있으나, 종내변이는 물론 근사종과의 형태적 유사성이 심한 주요해충 중의 하나이다. 본 조사는 동부아시아 6개 지역에서 선발된 꼭지매매충의 수컷 8개체군을 대상으로 총 23개 정량형질에 대해 각 주요지역 계통간 이소적 특성, 기주식물 및 계절 등의 요인에 따른 동소적 특성, 우열도 및 그 상호관련성등을 알아보기 위해 전자영상 미세측정방식과 고급 다변량 전산통계 분석법에 의한 종내 수리분류를 실시하였다. 그 결과, 지역별 평균분리도가 최저 90% 이상으로 매우 높았고, 기주별 및 계절별 등에 따른 종내 개체군간 평균분리도는 80% 이상으로 나타났다.

Boseogchal is a newjaponica rice cultivar developed from the three-way cross ofHwayoung, Tamjin and Sinseonchalat Honam Agricultural Research Institute (HARI), RDA, in 2004. It is a waxy rice with about 117 days of growth duration fromtransplanting to har

Hanmaeum is a new super-yielding japonica rice cultivar developed from a three-way cross of Mi1yang165,YR16365Acp13 and Iksan438 at Honam Agricultural Research Institute (HARI), RDA, in 2004. This cultivar has about 119 daysgrowth duration from transplant

Sindongjinbyeo is a new japonica rice cultivar developed from a cross between Hwayeongbyeo and YR13604Acp22 line by the rice breeding team of National Honam Agricultural Experiment Station (NHAES), RDA, in 1999. This cultivar has a large grain and about 1

Mihyangbyeo, a new japonica aromatic rice (Oryza sativa L.) was developed by National Honam Agricultural Experiment Station (NHAES), RDA in 1998. It was derived from the three-way cross among Seomjinbyeo of the disease resistance and high yielding lines,