| 释义 |
cultigen, n. Bot.
Brit. |ˈkʌltɪdʒɛn|, |ˈkʌltɪdʒ(ə)n|, U.S. |ˈkəltədʒ(ə)n|
[‹ culti- (in cultivated adj.) + -gen comb. form.]
A cultivated plant species or variety of which no wild ancestor has been identified.
1918L. H. Bailey in Science 29 Mar. 306/2 If an author were to prepare a flora..of cultivated plants..he would come hard against the fact that he deals with two..types of species. One..has recorded origin... The other..is a domesticated group of which the origin may be unknown or indefinite... I trust I may be pardoned for calling such species or group a cultigen. 1946A. Nelson Princ. Agric. Bot. xxv. 480 When a cultigen is increased by propagation, the production of sufficient stock ‘seed’ for commercial introduction is simplified. 1977G. Clark World Prehistory (ed. 3) ix. 402 Some of the most important cultigens [of North America] were introduced,..notably beans, squash and maize. 2002New Phytologist 154597/1 How many genes are involved in the various morphological transformations that contribute to a domestication? This is explored in sorghum and rice, in each case focusing on crosses between the cultigen and a wild relative. |