Abstract
Major characteristics have been studied on Daejappong which is autotetraploid brooded for mulberry fruit and Garmbacppong selected from the wild mulberry of Turkey. The number of chromosomes of Daejappong was 2n=56 recornized tetraploid, and that of Gambacppong was 2n=42 as a triploid. The percentage of seed formation, sank seed and germination of Daejappong were 48.2%,32.7%,90.0% respectively, on the other hand these of Carmbacppong were very low level as 41.0%, 1.9%,7.0% respectively. On the single fruit (sorosis) weight, Daejappong was large fruit as 4.39 g with light purple color, and Garmbacppong was medium fruit as 3.26 g with milk white color. Sugar contents (Brix %) and total acidities of Daejappong and Garmbacppong were 14.2%,0.45%, and 19.3%,0.15% respectively. Maturities of 2 cultivars were late and mulberry fruit yield of Daejappong was high and that of Garmbacppong was medium yielding.
오디용 뽕품종으로 국상20호의 동질4배체인 대자뽕(4원뽕 31호)을 육성하였으며, Turkey 재래종 중에서 3배성인 감백뽕을 선발 육성하였는바 그 주요 특성은 다음과 같다. 1. 염색체수는 대자뽕은 2n=56인 4배체이고, 감백뽕은 2n=42인 3배체 이다. 2. 대자뽕의 종자형성률은 48.2% , 침종자율은 32.7%로 낮았으나 발아율은 90%에 달하였다. 감백뽕의 종자형성율은 41.0% , 침종자율은 1.9%, 발아율은 7.0%에 불과하였다. 3. 대자뽕 오디의 단과중은 4.39 g로 대과충만형이고, 오디색은 연자색이며, 감백뽕 오디는 3.269의 중대형이고 유백색 이다. 4.대자뽕 오디의 당도는 14.2 Brix 총산도는 0.45%이며, 감잭뽕 오디의 당도는 19.3%로서 고당성이고 총산도는 0.15%이다. 5.두 품종 모두 오디의 숙기는 만숙성이고, 오디의 착과정도는 대자뽕은 많으며, 감백뽕은 보통수준이다. 춘기 발아개엽기는 공시품종 모두 중생뽕이다
