How Plants Are Trained to Work for Man; Grafting and Budding Volume 2

How Plants Are Trained to Work for Man; Grafting and Budding Volume 2

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1921 edition. Excerpt: found among the many ' that would produce fruit. But in this I was disappointed; not a plant produced a single seed. The miniature fruit remained unchanged in size until it finally dropped from the bush in the fall. The following season a few of the plants bore one or two fruits having two or three drupelets each, like mere fragments of a normal raspberry. But not a seed was found. The plants were as sterile as mules. So here the experiment ended, and the hybrid strawberry-raspberries followed the hybrid dewberries to the brush heap. Why The Experiments Failed If we now consider the results of these various experiments, it will be clear that they have certain elements in common. In all cases the hybridizing was effected between species that are botanically related. But in no case was the relationship between the mated forms very close. And this fact is of course of salient importance in enabling us to comprehend the results. It is almost axiomatic to say that the hybridizing of plants generally becomes increasingly difficult in proportion as the attempt is made to cross more and more distantly related species. Even within the same genus it is very often impossible to produce a hybrid that is not sterile. I might cite in further illustration of these difficulties the experiments through which I have hybridized the apple with the pear, and with the quince; the cherry with the plum; and the peach with the almond, with the Japanese plum, and with the apricot, without in any of these cases producing a product of value. These crosses, like the ones just detailed, bring together racial tendencies that are too widely divergent to be harmonized. It would appear that it is essential to the differentiation and perpetuation of species that bounds more

Product details

  • Paperback | 62 pages
  • 189 x 246 x 3mm | 127g
  • Miami Fl, United States
  • English
  • black & white illustrations
  • 1236666585
  • 9781236666581