ScienceJohn Michels (Journalist) 1949 |
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Стр. 219
... plants used in rock gardens and borders . In- A study of these facts leads to the conclusion that many of these plants may well be escaping disease and insect pests because of the way in which they are now grown , rather than because ...
... plants used in rock gardens and borders . In- A study of these facts leads to the conclusion that many of these plants may well be escaping disease and insect pests because of the way in which they are now grown , rather than because ...
Стр. 253
... plants ( Fig . 1 ) . At the end of 13 days hypocotyls of treated plants were approximately half as long as comparable parts of un- treated ones . First internodes of treated plants were about one - fourth the length of comparable parts ...
... plants ( Fig . 1 ) . At the end of 13 days hypocotyls of treated plants were approximately half as long as comparable parts of un- treated ones . First internodes of treated plants were about one - fourth the length of comparable parts ...
Стр. 254
... plant treated . Bean plants in different stages of development were used to compare the effect of 2,4 - DNCI on stem elongation of plants in different stages of maturity . Seedlings se- lected for the first group were about 3 in . tall ...
... plant treated . Bean plants in different stages of development were used to compare the effect of 2,4 - DNCI on stem elongation of plants in different stages of maturity . Seedlings se- lected for the first group were about 3 in . tall ...
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The Validity of the Use of Tracers to Follow | 149 |
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