한국산(韓國産) Prunus속(屬) 수(數) 종(種)의 엽밀선(葉蜜腺)의 형태(形態)에 관한 연구(硏究)

Morphological Study on the Leaf Nectar Glands of Some Prunus Species in Korea

한국산(韓國産) Prunus 4종(種) 품종(品種)에 대한 엽신저부분(葉身底部分)과 엽병상(葉柄上)의 밀선(蜜腺)의 형태적(形態的) 특징(特徵)은 다음과 같았다. 밀선(蜜腺)의 형태(形態)는 평면상(平面上)으로 원형(圓型)과 부정타원형(不定楕圓型)이 있으며 원형(圓型)에는 개벚지나무, 산개벚지나무, 산벚나무와 왕벚나무가 있었고, 부정타원형(不定楕圓型)에는 올벚나무가 있었다. 밀선(蜜腺)의 측면상(側面上) 형태(形態)는 중앙요두형(中央凹頭型)으로 개벚지나무, 산벗나무와 왕벗나무가 있었으며 부정요두형(不定凹頭型)은 올벚나무, 원두형(圓頭型)은 산개벚지나무 1종(種)이 있었다. 특이(特異)하게 올벚나무는 밀선(蜜腺)이 엽신(葉身)에서 융기되어 엽신(葉身)뒷면이 함몰된 형태(形態)를 나타냈다. Prunus속(屬) 및 종(種)은 밀선(蜜腺)의 부위별(部位別) 출현율(出現率)과 형태적(形態的) 특징(特徵)에 의해 검색(檢索)이 자능(可能)하였다.

Morphological characters on the leaf nectar gland of Korean Prunus 4 species and 1 form were observed by SM. The results were summarized as follows ; The shapes of nectar gland on the plane figure were two, the circular and the irregular ovate. The species of circular shape were P. maackii, P. maximowiczii, P. sargentii and P. yedoensis. The irregular ovate shape was only one species, P. pendula for. ascendens. The shapes of nectar gland on the side figure were the reentrant apices and the rounded. The reentrant apices were two shapes. First, the species of the center reentrant was three, P. maackii, P. sargentii and P. yedoensis. Second, the species of the irregular reentrant was P. pendula for. ascendens. The rounded apex was only one species, P. maximowiczii. Especially on the P. pendula for. ascendens, the upheaval situation on surface of leaf blade was due to the sinking of reverse part of leaf blade at the nectar gland. The point of this abnormal shape was well distinguished from the other species. On the frequency by the part of leaf with nectar gland, the species to be observed only at the leaf base was P. pendula for. ascendens, the other species was observed two part of leaf base and petioles. In this study, some Prunus species were well keyed out on the basis of the morphological characters of leaf nectar gland.