하이부쉬 블루베리의 품종별 화기 특성 및 형태적 관찰
Morphology and Characteristics of Floral Organ in Highbush Blueberry (Vaccinium corymbosum) Cultivars
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초록
국내 도입된 하이부쉬 블루베리의 품종 선발의 기초 자료로활용하기 위하여 블루베리의 형태적 및 품종별 화기 특성에 관해 연구하였다. 블루베리의 수술의 형태를 보면 화사는 판형이었고 모용이 잘 발달되어 있으며, 개약 시 약벽이 열개되지 않고돌출된 두 개의 관으로 꽃가루가 배출되어 독특하였다. 화분은3월 하순경에 감수 분열된 후에 분리되지 않은 채로 성숙한 사분자 화분(tetrad pollen)이었다. 약당 사분자 화분립 수는 400~ 1,300개였으며, 화분립 수가 많은 품종이 발아율도 높은 편이었다. 블루베리의 암술은 5개의 심피로 구성되어 있으며, 화주는갈라진 부분이 없이 하나였다. 자방당 배주 수는 39~67개 정도였으며, 각 품종별로 변이 계수가 11.6~31.0%로 큰 편이었다. ‘Bluejay’와 ‘Sharpblue’간의 자가 및 타가교배 결과 자가교배보다 타가교배에서 종자 형성률이 높았다.
Abstract
Morphology and characteristics of floral organ in highbush blueberry cultivars were studied to select suitable cultivars of highbush blueberry for domestic cultivation. The stamen consists an anther and a tape-like hairy filament with well-developed trichomes. When the anther was opened, the wall of anther was not dehiscent, and pollen grains were discharged into two tubes. Pollen was mature tetrad type without being separated after meiosis (Late March). The number of pollen granules per anther was 400~1,300, the germination rate was higher in the cultivars having many pollen grains. Pistil was composed of five carpels and a shipper without separate part. The number of ovules per ovary was 39~67, therefore, the coefficient of ranged from 11.6 to 31.0%. The seed pod formation by combination of ‘Bluejay’ and ‘Sharpblue’ was higher in the cross-pollination than in the self-pollination.
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