| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Dep. of Entomology, Texas A&M Univ., College Station, TX 77843
USDA-ARS, t. 7, Box 999, Beaumont, TX 77713
* Corresponding author (wilson*{at}kelsun2.tamu.edu).
A rice (Oryza sativa L.) crop functions as a population of tillers produced at different times and possessing specific growth characteristics. The objective of this study was to characterize the contribution of cultivar tillering ability to dry matter accumulation, yield components, and grain yield. Field experiments were conducted over a 2-yr period using a completely randomized plot design at Beaumont, TX, grown under a pin-point flood system, with a China clay soil (fine, smectitic, hyperthermic Oxyaquic Dystrudert). Three cultivars were chosen (Gulfmont, Rosemont, and Teqing), to represent moderate to high tillering abilities, and three .plant densities were chosen (56, 112, and 169 plants m–2), to produce differential competition for light and nutrients. Teqing had the highest tillering ability and partitioned more mass to tillers, especially at the lowest plant density, with 77% of the total mass represented by tillers, compared with 71 and 69% for Gulfmont and Rosemont, respectively. However, total dry mass per unit area at harvest was not significantly different, contrasting the plant density treatments (1618, 1725, and 1744 g m–2 for the 56, 112, and 169 plants m–2 treatments, respectively, when averaged across cultivars). Both cultivar and plant density significantly affected a number of yield components, but not kernel weight. The higher yield of Teqing (918 g m–2), contrasted with the lower-yielding Gulfmont (791 g m–2) and Rosemont (729 g m–2), appears largely to have resulted from its greater tillering ability, higher spikelet density, and longer maturation period, which makes greater use of the relatively long growing season length at Beaumont
Received for publication October 21, 1996.
This article has been cited by other articles:
|
|
 |
|
  J. A. Bond, T. W. Walker, B. V. Ottis, and D. L. Harrell Rice Seeding and Nitrogen Rate Effects on Yield and Yield Components of Two Rice Cultivars Agron. J., February 26, 2008; 100(2): 393 - 397. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 T. H. Kebrom and T. P. Brutnell The molecular analysis of the shade avoidance syndrome in the grasses has begun J. Exp. Bot., October 5, 2007; (2007) erm205v1. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. O. PB. Samonte, L. T. Wilson, J. C. Medley, S. R. M. Pinson, A. M. McClung, and J. S. Lales Nitrogen Utilization Efficiency: Relationships with Grain Yield, Grain Protein, and Yield-Related Traits in Rice Agron. J., January 5, 2006; 98(1): 168 - 176. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. A. Bond, T. W. Walker, P. K. Bollich, C. H. Koger, and P. Gerard Seeding Rates for Stale Seedbed Rice Production in the Midsouthern United States Agron. J., October 19, 2005; 97(6): 1560 - 1563. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S. JAFFUEL and J. DAUZAT Synchronism of Leaf and Tiller Emergence Relative to Position and to Main Stem Development Stage in a Rice Cultivar Ann. Bot., February 1, 2005; 95(3): 401 - 412. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. A. LAFARGE, I. J. BROAD, and G. L. HAMMER Tillering in Grain Sorghum over a Wide Range of Population Densities: Identification of a Common Hierarchy for Tiller Emergence, Leaf Area Development and Fertility Ann. Bot., July 1, 2002; 90(1): 87 - 98. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
T. A. LAFARGE and G. L. HAMMER Tillering in Grain Sorghum over a Wide Range of Population Densities: Modelling Dynamics of Tiller Fertility Ann. Bot., July 1, 2002; 90(1): 99 - 110. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S.O.PB. Samonte, L.T. Wilson, A.M. McClung, and L. Tarpley Seasonal Dynamics of Nonstructural Carbohydrate Partitioning in 15 Diverse Rice Genotypes Crop Sci., May 1, 2001; 41(3): 902 - 909. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
L. Zeng and M. C. Shannon Salinity Effects on Seedling Growth and Yield Components of Rice Crop Sci., July 1, 2000; 40(4): 996 - 1003. [Abstract] [Full Text]
|
|
|
|
|
|
L. Zeng and M. C. Shannon Effects of Salinity on Grain Yield and Yield Components of Rice at Different Seeding Densities Agron. J., May 1, 2000; 92(3): 418 - 423. [Abstract] [Full Text]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
| The SCI Journals | Crop Science | Vadose Zone Journal | |||
| Journal of Natural Resources and Life Sciences Education |
Soil Science Society of America Journal | ||||
| Journal of Plant Registrations | Journal of Environmental Quality |
The Plant Genome | |||
