Leaf Anatomy of Three Varians of Arundina graminifolia (D. Don.) Hochr

Abstract

Three variations of Arundina graminifolia flowers have been recognized, (1) group of big flower with reddish violet lip and purplelish white sepals and petals (2) group of small flower with white lip and white sepals and petals (3) similar to second variation but with purple color on the lip apex. In order to clarify the taxonomy status of those three variations, a leaf anatomical study had been carried out. Results of this study showed that there were some differences among them in trichome shape and number mesophyll layers. Big flower group of Arundina has trichome club shape and thick mucous in the apex with mesophyll layer 9-11; for small flower group has white lip, trichome club shape, thick mucous and granulate in the apex, but only 2 mesophyl layers; whereas for other small flower group with purple lip has trichome cup shape and 10-13 layers of mesophyll. Based on the differences in flower size and their color variation, and combined with leaf anatomical study, we suggested the three variations of A. graminifolia should be in separated groups.

STUDI AWAL PEMULIAAN Arundina graminifolia (D.Don) Hochr. (ORCHIDACEAE) MENGGUNAKAN IRADIASI SINAR GAMMA

“…Bentuk polen oblate spheroidal ditemukan pada varian putih dan prolate spheroidal pada varian merah muda dan ungu (Marvianti et al 2018). Sementara karakter trikoma juga dapat digunakan sebagai pembeda antar kelompok A. graminifolia (Sulistiarini & Tihurua 2009).…”