Year: 2021 | Month: June | Volume 14 | Issue 2
Genetics and Genomic basis of Stay-green Trait
Harshavardan J Hilli
Amandeep
DOI:10.30954/0974-1712.02.2021.1
Abstract:
Staygreen is one such trait in which genotypes possessing this trait maintain more photo synthetically active leaves (& less senescent) than genotypes not possessing this trait. Delay of leaf senescence also known as stay-green character, has been identified as an important component in the genetic improvement of several crops to promote stress tolerance and yield gain. Although the stay-green phenotype is superficially similar in all species and genotypes, the genetic and physiological routes the traits are diverse. Photosynthetically active leaves for longer period depends on the concentration of chlorophyll pigment absorbing sunlight for photosynthesis. An multi dimensional approach for studying the senescence pathway rather than studying only the physiological role made a significant role in improvement. Hence new approaches like genomics, proteomics and metabolomics studies are necessary to understand the various transcription factors involved in regulating the leaf senescence process. Therefore, this review has aimed to bring light to major aspects of the stay-green character, showing its potential use in plant breeding.
© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
Highlights
- Green Traits are required especially in a drought environmental condition.
- To keep the greenness of leaves alive for a longer period of time, especially during the grain filling stage.
- To maintain or increase higher grain yield.
- Stay-green results when the plant’s normal process of senescence is disrupted.
Print This Article Email This Article to Your Friend
