TITLE:
Performance of 32 Hybrid Rice Varieties at Pine Bluff of Arkansas
AUTHORS:
Bihu Huang, Zongbu Yan
KEYWORDS:
Performance, Hybrid Rice, Variety, Pine Bluff, Arkansas
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.7 No.15,
November
10,
2016
ABSTRACT: Yield test of 41 entries, 32 new hybrids, 8 male parents restore lines and 1 inbred variety,
was conducted on the farm of University of Arkansas at Pine Bluff (UAPB) in
2012. The only inbred Francis in this experiment was used as the check. Francis is a
popular variety and widely used in Arkansas rice production. Results showed that the
yields of 7 hybrids were 25.7% - 30.7% higher than check Francis. Hybrid 28s/BP23R
had the highest yield, 10846.6 kg/hectare and over check by 30.7%. The yield of hybrid
28s/PB-24, was 10628.9 kg/hectare and over check by 28.1%. The yields of hybrid
28s/PB-22 and 33A/PB24 were 10549.8 and 10539.8 kg/hectare and over check
by 27.1% and 27.0%, respectively. The sterile lines 28s, 29s, 30s and 33A have good
combinability. PB2, PB5, PB12, PB22, PB23, PB24, and PB25 are good restorers and
most of their hybrids were over check more than 17%. Sterile 28s has DEMG (Dominant
Early Maturity Gene) which can make earlier heading hybrids by crossing
with late restorer lines. Sterile 30s and 33A have no DEMG but have heat resistant
gene. They can make late heading hybrids by crossing with late restorer lines PB24
and PB22 and the late heading hybrids can resistant to hot temperature. These results
showed that these sterile lines, restorer lines and hybrids can be used in rice production
of Arkansas in the future.