The Effects of Cross & Self-Fertilisation in the Vegetable Kingdom

by Charles Darwin

Petunia violacea—offspring of plants self-fertilised for four
generations and then crossed by a fresh stock, compared with plants of
the fifth self-fertilised generation, in height:
21 : 50.05 : 21 : 33.23 : 66.

Petunia violacea—offspring of plants self-fertilised for four
generations and then crossed by a fresh stock, compared with plants of
the fifth self-fertilised generation, in weight:
.. : .. : .. : .. : 23.

Petunia violacea—offspring of plants self-fertilised for four
generations and then crossed by a fresh stock, compared with plants of
the fifth self-fertilised generation, grown in open ground, in height:
10 : 36.67 : 10 : 23.31 : 63.

Petunia violacea—offspring of plants self-fertilised for four
generations and then crossed by a fresh stock, compared with plants of
the fifth self-fertilised generation, grown in open ground, in weight:
.. : .. : .. : .. : 53.

Petunia violacea—offspring of plants self-fertilised for four
generations and then crossed by a fresh stock, compared with plants of
the fifth self-fertilised generation, grown in open ground, in
fertility:
.. : .. : .. : .. : 46.

Petunia violacea—offspring of plants self-fertilised for four
generations and then crossed by a fresh stock, compared with plants of
the fifth intercrossed generation, in height:
21 : 50.05 : 22 : 54.11 : 108.

Petunia violacea—offspring of plants self-fertilised for four
generations and then crossed by a fresh stock, compared with plants of
the fifth intercrossed generation, in weight:
.. : .. : .. : .. : 101.

Petunia violacea—offspring of plants self-fertilised for four
generations and then crossed by a fresh stock, compared with plants of
the fifth intercrossed generation, grown in open ground, in height:
10 : 36.67 : 10 : 38.27 : 104.

Petunia violacea—offspring of plants self-fertilised for four
generations and then crossed by a fresh stock, compared with plants of
the fifth intercrossed generation, grown in open ground, in weight:
.. : .. : .. : .. : 146.

Petunia violacea—offspring of plants self-fertilised for four
generations and then crossed by a fresh stock, compared with plants of
the fifth intercrossed generation, grown in open ground, in fertility:
.. : .. : .. : .. : 54.