Early Growth in Rice varieties in relation to their Duration and response to growth-substances

Abstract

A good deal of attention has been devoted in recent years to the inter-relations that exist in a number of crop plants between differences in the early growth and the subsequent growth behaviour of these plants. (Thimann and Lone, 1938; Sinnott, 1939; Van Overbeek, 1935; Kaiser and Albaum 1938). The last two workers were able to find a close relation in the case of oats, between the early growth and the-subsequent flowering behaviour. An early-flowering variety (Fulghum) was found to have in the early stages of growth a slower rate of root growth than a late-flowering type Black Norway. The two varieties differed also in their response to different concentrations of the growth-promoting substance B-indole acetic acid. The late-flowering type Black Norway showed a more rapid shoot growth when treated with concentrations of 002 mg./litre to 2-0 mg./ litre, while the early-flowering type Fulghum remained unaffected. A similar relation was observed in two other varieties of oats as well and the authors.concluded that if such a relation was found to be general, it could be made to serve as a valuable index of flowering time.

DOI

https://doi.org/10.29321/MAJ.10.A04525

Pages

89 - 96

Creative Commons

Copyright

© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

Keywords