Perhaps there had been, once, when the air was thick enough to support insects, but now most of the Martian plant-life was self-fertilised. From Wordnik.com. [The Sands of Mars]
Verbascum, fertilised by flies and bees, but also self-fertilised. From Wordnik.com. [Darwinism (1889)] Reference
Nevertheless, the self-fertilised flowers produced an abundance of seed. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
You suggest the comparison of the growth of plants produced from self-fertilised and crossed seeds. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
An equal number of crossed and self-fertilised capsules contained seed by weight in the proportion of 100 to 71. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
From this extreme degree of sterility we have self-fertilised hybrids producing a greater and greater number of seeds up to perfect fertility. From Wordnik.com. [On the Origin of Species by Means of Natural Selection or the Preservation of Favoured Races in the Struggle for Life. (2nd edition)] Reference
Besides these pairs of competitors, others were planted in beds, so that the descendants of the crossed and self-fertilised flowers might compete. From Wordnik.com. [Life of Charles Darwin] Reference
Lobelia, etc., which seeded much more freely when fertilised with the pollen of distinct species, than when self-fertilised with their own pollen. From Wordnik.com. [On the origin of species] Reference
I am now busy in drawing up an account of ten years 'experiments in the growth and fertility of plants raised from crossed and self-fertilised flowers. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
Most of these, however, may be insect fertilised occasionally, and may, therefore, come under the rule that no species are perpetually self-fertilised. From Wordnik.com. [Darwinism (1889)] Reference
An immense variety of plants are habitually self-fertilised, and their numbers probably far exceed those which are habitually cross-fertilised by insects. From Wordnik.com. [Darwinism (1889)] Reference
So that certain individual plants and all the individuals of certain species can actually be hybridised much more readily than they can be self-fertilised!. From Wordnik.com. [On the Origin of Species by Means of Natural Selection or the Preservation of Favoured Races in the Struggle for Life. (2nd edition)] Reference
Hippeastrum, Lobelia, &c, which seeded much more freely when fertilised with the pollen of distinct species, than when self-fertilised with their own pollen. From Wordnik.com. [On the Origin of Species by Means of Natural Selection or the Preservation of Favoured Races in the Struggle for Life. (2nd edition)] Reference
I believe the cause of the many vars. not crossing is that under our climate the flowers are self-fertilised at an early period, before the corolla is fully expanded. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
The flowers of Eschscholtzia when crossed with pollen from a distinct plant produced 91 per cent. of capsules; when self-fertilised the flowers produced only 66 per cent. of capsules. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
I am going steadily on with my experiments on the comparative growth of crossed and self-fertilised plants, and am now coming to some very curious anomalies and some interesting results. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
But, as Darwin remarks, profuse expenditure is nothing unusual in nature, and it appears to be more profitable for a plant to yield a few cross-fertilised than many self-fertilised seeds. From Wordnik.com. [Life of Charles Darwin] Reference
Henslow, Professor G., on vigour of self-fertilised plants, 323 on wind-fertilised as degradations from insect-fertilised flowers, 324 on origin of forms and structures of flowers, 434 (note). From Wordnik.com. [Darwinism (1889)] Reference
We are reminded by this latter fact of the extraordinary case of Hippeastrum, Lobelia, &c., which seeded much more freely when fertilised with the pollen of distinct species, than when self-fertilised with their own pollen. From Wordnik.com. [On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life] Reference
We are reminded by this latter fact of the extraordinary case of Hippeastrum, Lobelia, etc., which seeded much more freely when fertilised with the pollen of distinct species, than when self-fertilised with their own pollen. From Wordnik.com. [On the Origin of Species~ Chapter 08 (historical)] Reference
This is the case with the garden-pea, and also with our beautiful bee-orchis, in which the pollen-masses constantly fall on to the stigmas, and the flower, being thus self-fertilised, produces abundance of capsules and of seed. From Wordnik.com. [Darwinism (1889)] Reference
With these modifications the species might extend its range into new districts, thereby obtaining increased vigour by the change of conditions, as appears to have been the case with so many of the small flowered self-fertilised plants. From Wordnik.com. [Darwinism (1889)] Reference
And thus, the strange fact of an increase of fertility in the successive generations of artificially fertilised hybrids, in contrast with those spontaneously self-fertilised, may, as I believe, be accounted for by too close interbreeding having been avoided. From Wordnik.com. [IX. Hybridism. Distinction between the Sterility of First Crosses and of Hybrids] Reference
If we could imagine the same flower to yield seeds during successive years, then it would not be very surprising that a flower of which the ovarium had been modified by foreign pollen should next year produce, when self-fertilised, offspring modified by the previous male influence. From Wordnik.com. [The Variation of Animals and Plants Under Domestication, Vol. I.] Reference
To return to the subject of crossing: I am experimenting on a very large scale on the difference in power and growth between plants raised from self-fertilised and crossed seeds, and it is no exaggeration to say that the difference in growth and vigour is sometimes truly wonderful. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
When garden-peas were artificially cross-fertilised by Mr. Darwin, it seemed to do them no good, as the seeds from these crosses produced less vigorous plants than seed from those which were self-fertilised; a fact directly opposed to what usually occurs in cross-fertilised plants. From Wordnik.com. [Darwinism (1889)] Reference
In some of these cases it is really a wonderful physiological fact to see the difference of growth in the plants produced from self-fertilised and crossed seeds, both produced by the same parent-plant; the pollen which has been used for the cross having been taken from a distinct plant that grew in the same flower-pot. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
The facts as to the cross-fertilisation of flowers which have now been very briefly summarised, taken in connection with Darwin's experiments proving the increased vigour and fertility given by cross-fertilisation, seem amply to justify his aphorism that "Nature abhors self-fertilisation," and his more precise statement, that, "No plant is perpetually self-fertilised;" and this view has been upheld by. From Wordnik.com. [Darwinism (1889)] Reference
"The interpretation, then, I would offer of inconspicuousness and all kinds of degradations is the exact opposite to that of conspicuousness and great differentiations; namely, that species with minute flowers, rarely or never visited by insects, and habitually self-fertilised, have primarily arisen through the neglect of insects, and have in consequence assumed their present floral structures" (p. 282). From Wordnik.com. [Darwinism (1889)] Reference
As opposed to the theory that there is any absolute need for cross-fertilisation, it has been urged by Mr. Henslow and others that many self-fertilised plants are exceptionally vigorous, such as groundsel, chickweed, sow-thistle, buttercups, and other common weeds; while most plants of world-wide distribution are self-fertilised, and these have proved themselves to be best fitted to survive in the battle of life. From Wordnik.com. [Darwinism (1889)] Reference
This perhaps refers to Boissiera (Ladizabala).) has after all seeded well with me when crossed by opposite form, but very sparingly when self-fertilised. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
See Letter 677.); for I am now rearing crossed and self-fertilised plants, in antagonism to each other, from your semi-sterile plants so that I may compare this comparative growth with that of the offspring of English fertile plants. From Wordnik.com. [More Letters of Charles Darwin — Volume 2] Reference
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