Cytogenetic Notes on Tomato Species and Hybrids.
نویسندگان
چکیده
Since Lycopersicon was separated from the closely related Solanum, the species of tomatoes have been reduced by taxonomic revisions to six (MULLER 1940) or seven (LUCKWILL 1g43), all probably indigenous to the West coast of South America or the adjacent Galapagos Islands. These species are naturally divided into two sections or subgenera: I. EULYCOPERSICON, containing the two edible and widely cultivated species and their numerous natural and artificial hybrids and derived combinations. Theseare annual, mainly selfpollinating, species, generally lacking bracts and pseudostipules, and bearing glabrous, red (yellow, etc.) fruits containing the carotinoid pigments, lycopene and carotin. L. esculentum Mill. the common cultigen, has coarse, villose stems, while L. pimpinellifolium (Jus].) Mill., the Red Currant tomato, has slenderer, smooth stems, raceme-like inflorescences, and smaller fruits. 11. ERIOPERSICON, including four or five, more or less woody-stemmed, perennial wild species, distributed along the narrow coastal strip or up mountain slopes from Ecuador to Chile, and in the Galapagos Islands. These species are probably crosspollinating (LUCKWILL 1943) and bear small, pubescent, clear-skinned, greenish-white fruits, often tinged, moitled or striped with purple, and containing chlorophyll and anthocyan pigmentf;. A. Species with simpleinflorescence and leaf form, and lacking bracts and pseudostipules. L. cheesmani Riley, of the Galapagoa, and L. pissisi Phil. (or L. peruvianum var. humijusum of MULLER 1940). B. Species with forked inflorescences, more complex leaf forms, and with bracts and pseudostipules. L. peruvianum (L) Mill. is a coastal desert species with several varieties, including dentatum Dun (L. chilense), and probably humifusum C. H. Mull. (L. pissisi). L. glandulosum, C. H. Mull and L. hir-
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عنوان ژورنال:
- Genetics
دوره 32 2 شماره
صفحات -
تاریخ انتشار 1947