بررسي هاي بيوسيستماتيك دو گونه اسپرس (Onobrychis viciifolia، O. altissima) در ايران

BIOSYSTEMATIC STUDY OF ONOBRCHIS VICIIFOLIA SCOP. AND ONOBRCHIS ALTISSIMA GROSSH. (FABACEAE) IN IRAN

Morphologic characters, meiotic chromosome number and behavior were analyzed in different wild populations of Onob rchis viciifo lia Scop. and Onobryc his altissima Grossh, belongingo O. sect. Onobrychis in Iran. All Iranian populations of 0. viciifolia and 0. altissima studied here were tetraploid and showed 2n = 4x = 2&:hromosome number. The basic chromosome numbers (x = 7) is consistent with the proposed base number of x = 7 for O. viciifolia and O. altis sima . For 0. altissima, two ploidy levels (211 = 2t = 14 and 2n = 4x = 28) have been report ed from Caucasus. Results support the hyp oth esis that Onobrchis viciifolia and O. altissima are related as