The Book of Wheat: An Economic History and Practical Manual of the Wheat IndustryO. Judd, 1908 - 369 páginas |
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Página 33
... IMPROVEMENT . Wheat Improvement Proper consists of artificially increasing the natural variations of the wheat plant and its environment . Historically , it is unknown whether the plant or the environ- ment was first the subject of ...
... IMPROVEMENT . Wheat Improvement Proper consists of artificially increasing the natural variations of the wheat plant and its environment . Historically , it is unknown whether the plant or the environ- ment was first the subject of ...
Página 35
... homotyposis devel- oped by Prof Karl Pearson in his work at University College , Eng- land , but space forbids a discussion of the matter here . tion of variation may be , the scientific wheat grower IMPROVEMENT OF WHEAT 35.
... homotyposis devel- oped by Prof Karl Pearson in his work at University College , Eng- land , but space forbids a discussion of the matter here . tion of variation may be , the scientific wheat grower IMPROVEMENT OF WHEAT 35.
Página 37
... , while during the same years the un- 1 Georgics I. , lines 286-288 . 2 Neb . Bul . 32 , p . 91 . Kan . Buls . 20 , 33 , 40 and 59 . selected parent sort yielded only 22.5 bushels , an increase IMPROVEMENT OF WHEAT 37.
... , while during the same years the un- 1 Georgics I. , lines 286-288 . 2 Neb . Bul . 32 , p . 91 . Kan . Buls . 20 , 33 , 40 and 59 . selected parent sort yielded only 22.5 bushels , an increase IMPROVEMENT OF WHEAT 37.
Página 38
... improvement . It is not yet decided whether selection should be for plants with large heads or for plants with a large number of medium - sized heads . In general , the results of many experiments seem to favor the selection of large ...
... improvement . It is not yet decided whether selection should be for plants with large heads or for plants with a large number of medium - sized heads . In general , the results of many experiments seem to favor the selection of large ...
Página 39
... improvement by selection increases as the number from which individuals may be chosen grows larger . The plant breeder has a great economic advantage over the animal breeder , for the expense of producing seeds for individ- ual plants ...
... improvement by selection increases as the number from which individuals may be chosen grows larger . The plant breeder has a great economic advantage over the animal breeder , for the expense of producing seeds for individ- ual plants ...
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