Genetic behaviour for plant capacity to produce chlorophyll in wheat (Triticum aestivum) under drought stress.
The study was conducted with the objective of identifying parents to be used in a breeding program to develop high chlorophyll varieties. Combining ability, heterosis and inheritance of chlorophyll content, including chlorophyll a, chlorophyll b and total chlorophyll (a+b), were investigated in bre...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Southern Cross Publishing
2012
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| Online Access: | http://psasir.upm.edu.my/id/eprint/23840/1/Genetic%20behaviour%20for%20plant%20capacity%20to%20produce%20chlorophyll%20in%20wheat.pdf http://psasir.upm.edu.my/id/eprint/23840/ http://www.sciencej.com/ |
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| Summary: | The study was conducted with the objective of identifying parents to be used in a breeding program to develop high chlorophyll varieties. Combining ability, heterosis and inheritance of chlorophyll content, including chlorophyll
a, chlorophyll b and total chlorophyll (a+b), were investigated in bread wheat obtained from half-diallel crossings among eight parental lines.Cultivars with names of
Irena/Babax//Pastor, S-78-11, Tajan, Chamran, Moghan3, Hamoon, Veery/Nacozari and Hirmand have different capacities
to produce chlorophyll. Eight parental genotypes and
their resulting 28 F1s were grown in three replications of
randomised complete block design. Drought stress was
performed with irrigation at 75% soil moisture depletion,
the data collected were subjected to analysis of variance
and combining abilities were carried out according to Griffing’s method 2, model 1. The study was conducted
with the objective of identifying parents to be used in a breeding program to develop high chlorophyll varieties. General combining ability and specific combining ability effects were significant for traits’ chlorophyll content, chlorophyll a, chlorophyll b and total chlorophyll; however, non-additive gene effects were predominant over additive effects. The line Irena/Babax//Pastor transmitted
high chlorophyll content based on general combining ability to progenies that were made with it. Broad-sense heritabilities were high and strict-sense heritabilities
were low for the traits, confirming the importance of
non-additive gene effects. This could bring definition of
reduced selection efficiency for these mentioned traits. |
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