Homeostasis and Genotypic Resultant for the Main Spike Characters of Two-rowed Barely

Homeostasis and Genotypic Resultant for the Main Spike Characters of Two-rowed Barely



Dana Azad Abdulkhaleq



Ph.D in Plant Breeding and Genetics, Field Crops Department, Faculty of Agricultural Sciences, University of Sulaimani, Iraqi
Kurdistan.
E-mail: dana.abdulkhaleq@univsul.edu.iq





Article info

Original: 2 June. 2015

Revised:10 August.  2015

Accepted:30 August.  2015

Published online:  20 March.  2016




Key Words:

Two-rowed barley,
Homeostasis and
Genotypic Resultant
Analysis, Main spike
characters.


Abstract

Five genotypes of two-rowed barley (Hordeum distichum L.) named MORA, ABNB,
Arabi Aswad, Clipper and Bohoth H1 with their twenty F1 progeny were evaluated in
Kurdistan Region-Iraq at three different locations, Erbil-Grdarasha, Garmian-Kalar and
Sulaimani-Qilyasan during the winter season 2011-2012 using Randomized Completely
Block Design (RCBD) with three replications in order to study the homeostasis and
genotypic resultant growth and spike characters. The results revealed highly significant
effects due to genotypes × locations in most of the studied characters with exception of
flag leaf length, spike length, and grin weight / spike. Parent 1 was the best genotype
which had the highest homeostasis values for five characters no. of grain / spike (0.936),
flag leaf length (0.915), peduncle diameter (0.962), spike length (0.933) and no. of
spiklets / spike (0.975), while the hybrid (1×2) had the highest homeostasis values for
three characters flag leaf length (0.985), spike length (0.988), and no. of spiklets / spike
(0.990). So the homeostasis of these genotypes needs to be better evaluated in a set of
environments tested across different years. Very high genotypic resultant values were
obtained for no. of grain / spike (1.135 by the hybrid 2×5), flag leaf length (1.074 by the
hybrid 5×4), spike length and no. of spikelets / spike (1.061 and 1.059, respectively by
the hybrid 2×5) indicating these genotypes having high performances at different
environments and should be not ignored in future studies.





Ċ
Ramyar Abdolrahman Taimur Ismail,
Mar 20, 2016, 5:06 AM