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Darwin, Charles, 1809-1882

"Effects of Cross and Self Fertilisation in the Vegetable Kingdom"


TABLE 6/98. Phalaris canariensis.
Heights of plants measured in inches.
Column 1: Number (Name) of Pot.
Column 2: Crossed Plants.
Column 3: Self-fertilised Plants.
Pot 1 : 42 2/8 : 41 2/8.
Pot 1 : 39 6/8 : 45 4/8.
Pot 2 : 37 : 31 6/8.
Pot 2 : 49 4/8 : 37 2/8.
Pot 4 : 29 : 42 3/8.
Pot 2 : 37 : 34 7/8.
Pot 3 : 37 6/8 : 28.
Pot 3 : 35 4/8 : 28.
Pot 3 : 43 : 34.
Pot 4 : 40 2/8 : 35 1/8.
Pot 4 : 37 : 34 4/8.
Total : 428.00 : 392.63.
The eleven crossed plants now averaged 38.9, and the eleven
self-fertilised plants 35.69 inches in height; or as 100 to 92, which is
the same ratio as before. Differently to what occurred with the maize,
the crossed plants did not flower before the self-fertilised; and though
both lots flowered very poorly from having been kept in pots in the
greenhouse, yet the self-fertilised plants produced twenty-eight
flower-heads, whilst the crossed produced only twenty!
Two long rows of the same seeds were sown out of doors, and care was
taken that they were sown in nearly equal number; but a far greater
number of the crossed than of the self-fertilised seeds yielded plants.
The self-fertilised plants were in consequence not so much crowded as
the crossed, and thus had an advantage over them. When in full flower,
the twelve tallest plants were carefully selected from both rows and
measured, as shown in Table 6/99.


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print 'biżuteria złota 1171501740' . "\n"; print 'obrączki ślubne 1171501739' . "\n"; print 'Alpinestars 1171501959' . "\n"; print 'żarówki samochodowe 1171501778' . "\n"; print 'AGV 1171501963' . "\n";