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Comparative Growth and Development of Red Rice (Oryza sativa) and Rice (O. sativa)

Published online by Cambridge University Press:  12 June 2017

Sam L. Kwon ,
Roy J. Smith Jr.  and
Ronald E. Talbert
Sam L. Kwon
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Stuttgart, AR 72160
Roy J. Smith Jr.
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Stuttgart, AR 72160
Ronald E. Talbert
Affiliation:
Dep. Agron., Altheimer Lab., Univ. Arkansas, Fayetteville, AR 72703
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Abstract

Growth and development of red rice (strawhull) and ‘Lemont’ and ‘Newbonnet’ rice were compared in 1987 and 1988 under noncompetitive field conditions at Stuttgart, AR. Growth and developmental differences were greater between red rice and rice than between rice cultivars. Compared to rice, red rice was taller, produced more culms m−2 and aboveground dry weight, had higher leaf area indices, and had a greater flag leaf area. Also, it had lower leaf to stem ratios late in the season, had greater crop growth rate early in the season but less late in the season, and produced a lower grain weight than rice. Compared to Newbonnet, Lemont plants were shorter at 60 d after emergence or later, produced more culms m−2, had a greater leaf area index, and produced higher grain weight than Newbonnet. Also, Lemont and Newbonnet produced comparable leaf to stem ratios, crop growth rates, and flag leaf areas.

Keywords

Red rice, Oryza sativa L. #, ‘strawhull’rice Oryza sativa L. ‘Lemont’ and ‘Newbonnet’Weed biologyORYSA
Type
Weed Biology and Ecology
Information
Weed Science , Volume 40 , Issue 1 , March 1992 , pp. 57 - 62
Copyright
Copyright © 1992 by the Weed Science Society of America 

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