| 释义 |
self-polliˈnation
[self- 1 a.]
The deposition on a stigma of pollen from stamens within the same flower or another flower on the same plant.
1872Jrnl. Bot. X. 25 Hildebrand has shown that sometimes, where at first sight self-pollenation [sic] (a better word, I think for ‘Bestäubung’, than ‘pollenization’, suggested by Mr. Bennett) seems to be the intention of Nature, this is not followed by fertilization. 1876G. Henslow in Nature 19 Oct. 544/1 The pistil recovers itself, and its growth is equal to or precedes that of the stamens, the result issuing in a synchronous maturity, and consequently self-pollination. 1974A. Huxley Plant & Planet xiii. 124 A fail-safe device, such as..self-pollination as a last resort.
Hence [as back-formation] self-ˈpollinate v. trans.; self-ˈpollinated ppl. a., -ˈpollinating vbl. n. and ppl. a.; self-ˈpollinator, a species which commonly shows self-pollination.
1890J. R. A. Davis Flowering Plant ix. 130 Regularly self-pollinated flowers are characterized by inconspicuousness. Ibid., All this [sc. absence of scent and nectar, inconspicuousness, etc.] is carried to the extreme in cleistogamous flowers, i.e., minute self-pollinating ones, which never open. 1933Jrnl. R. Hort. Soc. LVIII. 283 At first the trees were too young to yield reliable results by crossing and self-pollinating. Ibid. 358 Hips developed freely, but even in those which were self-pollinated rarely more than one achene was formed. 1960McGraw-Hill Encycl. Sci. & Technol. VIII. 223/1 A second generation, bred by self-pollinating the hybrid. 1961Webster, Self-pollinator. 1977Nature 2 June 402/2 It was suggested that some of the Mediterranean floras..evolved..from cross- into self-pollinators because insects could not have followed the new hardy plants into the hot dry environment. 1979Ibid. 25 Oct. 671/2 This species is self-incompatible (1978 seed sets of self-pollinated flowers on five bagged plants compared with those of open-pollinated flowers on eight unbagged plants were 0.3 {pm} 0.08 (n = 256) compared with 7.1 {pm} 0.71 (n = 43)). |