Publications by authors named "Kwadwo O Ayeh"
This study was conducted with a view to screen nine genotypes of Cacao from The Cocoa Research Institute of Ghana (CRIG) to test their abilities to withstand drought stress conditions using parameters such as leaf relative water content (RWC), proline accumulation in leaves and trichomes. The experimental design consisted of three replicates of the genotypes used and these were laid out in Complete Randomized Block Design (CRBD) to determine the drought tolerance potentials of the nine genotypes of cocoa at the seedling stage. Two water treatments were used which involved withholding water from one day after full saturation with water prior to the first appearance of drought symptoms (FADS) and watering every two days to the completion of the experiment.
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- The Def locus in pea seeds influences the abscission between the funicle and seed coat, requiring cell wall remodeling for this process.
- Researchers investigated changes in pectic polysaccharides in wild type and def mutant pea seeds using immunolabeling techniques to identify factors behind abscission.
- Results showed specific changes in pectic components during abscission, highlighting that de-methyl esterification may contribute to the remodeling necessary for seed separation, as seen in the different patterns of labeling in dominant and recessive lines.
Article Synopsis
- Abscission is a critical process in plants that affects crop yields and ornamental quality, and researchers are focused on understanding its regulation to enhance control over this process in agricultural settings.
- A study on poinsettia showcases a reliable method of inducing abscission through specific bud decapitation, revealing important gene expressions linked to the process, including six genes that are differentially expressed.
- Comparative analysis between poinsettias and pea mutants highlights significant differences in abscission characteristics, offering insights into evolutionarily conserved genes and mechanisms across vastly separated plant species.
Article Synopsis
- The study focused on the def mutant pea, which has a unique trait of non-abscission of seeds from the funicule, and investigated the relationship between seed development, growth patterns, and the inheritance of the def allele.
- Findings showed that as pods mature, pod length and seed fresh weight increase, impacting the abscission event, but seed positioning within the pod did not affect this trait.
- The inheritance of the Def locus was significant, revealing a monogenic trait controlled by a homozygous recessive def allele, leading to differences in the seed coat structure compared to wild-type peas.
Background: In pea seeds (Pisum sativum L.), the Def locus defines an abscission event where the seed separates from the funicle through the intervening hilum region at maturity. A spontaneous mutation at this locus results in the seed failing to abscise from the funicle as occurs in wild type peas.
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