nstantaneous and historical temperature effects on a-pinene
Plant stature of aromatic
rice genotypes in the
environment of Bangladesh
Author Details
S.M. Shahidullah
(Corresponding
author)
Bangladesh Rice Research Institute (BRRI), Gazipur
1701, Bangladesh
e-mail: shahidullah4567@gmail.com
M.M. Hanafi??
Institute of Tropical Agriculture, UniversitiPutraMalaysia, 43400 UPM Serdang,
Selangor,
Malaysia
M.Ashrafuzzaman
Institute of Tropical Agriculture, UniversitiPutraMalaysia, 43400 UPM Serdang,
Selangor,
Malaysia
M.A. Hakim
Institute of Tropical Agriculture, UniversitiPutraMalaysia, 43400 UPM Serdang,
Selangor,
Malaysia
M.R.Karim
Bangldesh
Agricultural Development Corporation (BADC), Dhaka, Bangladesh
Publication Data
Paper received:
13
May 2010
Revised
received:
09
November 2010
Accepted:
20 December 2010
Abstract
Plant stature of a rice crop
is an important selection criterion. As plant height is a quantitative trait
it is influenced by environmental conditions. A field experiment was conducted
with 40 rice genotypes to assess the fluctuation and stability of plant
height in a series of 16 environmental situations. The effects of genotype
(G), environment (E) and all the components of G?E interaction were highly
significant. Among the genotypes, Jamaisohagi was extremely sensitive (bi = 1.37) to
environmental changes, and indicating lowest adaptability over the
environments. Plant height of seven genotypes viz.
Basmati PNR346, Benaful, BRRIdhan28, BRRIdhan38,
BRRIdhan39, Gandhokasturi
and Neimat, having the bi values between 0.59 and
0.72, showed high stability against environmental changes. The other seven
genotypes viz. Badshabhog, Basmati Tapl-90, Kaminisoru, Khazar, Laljira, Sarwati and Uknimadhu expressed only nonlinear sensitivity (S2di
= 90 ? 181)) and thus unpredictable fluctuation. Twenty one genotypes
indicated their average stability (bi = 0.91 -1.15) over the environments.
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