EVALUATION OF SOME GRAIN SORGHUM GENOTYPES UNDER DROUGHT ENVIRONMENTS
Gamil Z. El-Komoss; Mostafa F. Ahmed; Aiman H. Atta; Abdullah A. Amir; El-Gabry, Yasser;
Abstract
Drought adversely affects growth and yield of crops to various extents.
Growing of drought tolerant crops is a good option. For this reason, a field
experiment was conducted to evaluate forty grain sorghum hybrids, their
parental lines and Shandaweel) as check hybrid under normal and drought
conditions (100 and 50% of evapotranspiration (ET)) at Shandaweel Agric.
Res. Stat. in 2019 and 2020 growing seasons. The combined analysis of
variance over the two environments was done in 2019 and 2020.
The results showed that significant differences were existed among the
tow irrigation treatments, genotypes (parents and their F1, s hybrid) for all
studied traits, revealing a large amount of variability among them.
Significance of parent vs. crosses indicated the presence of heterotic effects
that were highly significant for all the studied traits. Drought susceptibility
index indicated that there were nine hybrids were the best drought tolerant
ones (ATXTSC-20 x 86 EO-361, ATXTSC-20 x RTX-2817, ICSA-37 x 86
EO-361, ICSA-37 x TAM-428, ICSA-37 x RTX-2817, ICSA-37 x RTX-
2895, ATX-407 x TAM-428, ATX-407 x RTX-2817 and ATX-BON-44x
RTX-2817). The best drought tolerant parental lines were ATXTSC-20,
ICSA-37, TAM-428, RTX-5646, RTX-2817 and ICSR-2908. The best
general combiners for grain yield per plant ATXTSC-20 and ICSA-37 the
female lines and the 86EO-361 and RTX-2809 male lines showed positive
and significant general comping ability (GCA) effects under normal and drought conditions. The best SCA hybrids were nine crosses for grain yield
per plant out of four forty hybrids that showed positive and significant SCA
effects under drought conditions. Heterosis related to the better parents
showed that the best hybrids under drought conditions were nine crosses for
grain yield and some of the other studied traits.
Growing of drought tolerant crops is a good option. For this reason, a field
experiment was conducted to evaluate forty grain sorghum hybrids, their
parental lines and Shandaweel) as check hybrid under normal and drought
conditions (100 and 50% of evapotranspiration (ET)) at Shandaweel Agric.
Res. Stat. in 2019 and 2020 growing seasons. The combined analysis of
variance over the two environments was done in 2019 and 2020.
The results showed that significant differences were existed among the
tow irrigation treatments, genotypes (parents and their F1, s hybrid) for all
studied traits, revealing a large amount of variability among them.
Significance of parent vs. crosses indicated the presence of heterotic effects
that were highly significant for all the studied traits. Drought susceptibility
index indicated that there were nine hybrids were the best drought tolerant
ones (ATXTSC-20 x 86 EO-361, ATXTSC-20 x RTX-2817, ICSA-37 x 86
EO-361, ICSA-37 x TAM-428, ICSA-37 x RTX-2817, ICSA-37 x RTX-
2895, ATX-407 x TAM-428, ATX-407 x RTX-2817 and ATX-BON-44x
RTX-2817). The best drought tolerant parental lines were ATXTSC-20,
ICSA-37, TAM-428, RTX-5646, RTX-2817 and ICSR-2908. The best
general combiners for grain yield per plant ATXTSC-20 and ICSA-37 the
female lines and the 86EO-361 and RTX-2809 male lines showed positive
and significant general comping ability (GCA) effects under normal and drought conditions. The best SCA hybrids were nine crosses for grain yield
per plant out of four forty hybrids that showed positive and significant SCA
effects under drought conditions. Heterosis related to the better parents
showed that the best hybrids under drought conditions were nine crosses for
grain yield and some of the other studied traits.
Other data
Title | EVALUATION OF SOME GRAIN SORGHUM GENOTYPES UNDER DROUGHT ENVIRONMENTS | Authors | Gamil Z. El-Komoss; Mostafa F. Ahmed; Aiman H. Atta; Abdullah A. Amir; El-Gabry, Yasser | Keywords | Grain sorghum;Heterosis;Combining ability;Drought Susceptibility index;Drought tolerance | Issue Date | 1-Apr-2022 | Journal | Journal of Environmental Sciences (JES) | Volume | 51 | Issue | 4 | Start page | 25 | End page | 53 | DOI | DOI: 10.21608/JES.2022.117942.1167 |
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