Growth Characteristics and Grain Quality of Naked Barley Infected by Barley Yellow Mosaic Virus

보리호위위병(BaYMV)이병에 따른 쌀보리 품종의 생육특성 및 품질

  • Published : 2003.12.01

Abstract

The growth characteristics and damage of naked barley infected with barley yellow mosaic virus (BaYMV) were investigated between resistant and susceptible varieties in habitual field plot of BaYMV BaYMV of the barley plants with typical disease symptom were identified by enzyme linked immunosorbent assay (ELISA) test. The visual degree (0-9) based on disease symptoms of BaYMV was different as 9 and 1 between susceptible variety Baegdong and resistant variety Naehanssalbori, respectively. Susceptible variety, Baegdong showed significant damage in culm length, number of kernel per spike and tiller per square meter but not in 1,000 kernel weight, so these results caused yield reduction to only 80% comparing to the control. Seed germination did not affected by BaYMV infection both in susceptible and resistant variety. In grain quality test, abortive grain yale and crude protein content were significantly increased compared to the control. The relationships between BaYMV infection and growth characteristics showed the negative correlations in culm length, number of tiller, 1000 kernel weight and yield, but it showed the positive correlation in crude protein contents. These results implied that BaYMV can affect not only barley growth and yield but grain quality.

보리호위축병 피해지역에 대한 수량감소의 예측을 위하여, 보리호위축병(BaYMV)에 대한 저항성 품종과 이병성 품종간 수량구성요소, 수량 및 증질 변이를 건전구와 이병구에서 비교 조사하였다. 1. 보리호위축병의 이병주는 BaYMV에 감염된 것으로 나타났으며, 이병정도는 감수성 품종인 백동에서 9, 저항성 품종인 내한쌀보리에서 1정도 발병하였다. 2. 감수성 품종인 백동은 천립중을 제외한 간장, 수당립수, $\textrm{m}^2$당 수수 등의 수량구성요소가 유의하게 감소하였으며, 수량은 대조구의 20%수준으로 현저히 감소하였다. 3. 보리호위축병 감염구에서 종자의 발아율은 감수성 품종과 저항성 품종간에 차이가 없었으나, 정립률은 감수성 품종인 백동에서 설립중이 유의하게 증가하였으며, 대조구에 비하여 정립률과 조단백질 함량 모두 유의한 차이를 보였다. 4. 보리호위축병은 간장, 수량, 정립률, 수수, 천립중, 1수립수 등의 피해와 부의 상관을, 조단백질 함량과는 정의 상관을 보여 보리호위축병에 이병이 되면 수량 및 품질에 크게 피해를 주는 것으로 나타났다.

Keywords

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