GrainGenes Reference Report: CSC-87-500
Reference
CSC-87-500
Title
Decline in reactive oxygen species at low light intensity can overcome necrosis barrier in hybrid wheat.
Journal
Current Science
Year
2004
Volume
87
Pages
500-503
Author
Geetanjali S Prabhu KV Renu K
Abstract
In an attempt to overcome the barrier to genetic transfer in wheat (Triticum aestivum), necrotic hybrids (Kalyansona x C306, WL711 x C306, and J24 x C306) showing different degrees of necrosis were grown in phytotron along with their parents Kalyansona, WL711, J24 and C306 under lower light intensity (25% of that in the field), long days and higher mean temperatures compared to those existing in the field. Leaf hydrogen peroxide levels, pollen viability and characters from ears of hybrids and their parents were determined. Leaves from plants grown in phytotron revealed lower levels of hydrogen peroxide in comparison to those in the field. Hybrids and their parents grown in phytotron exhibited early flag leaf and ear emergence than those seen in the field. Less severely necrotic hybrids formed viable seeds in the developing ears on the plant itself, whereas the most severely necrotic hybrid of the three formed seeds only after culturing in a medium. Main shoot ear from hybrids was smaller than that of the parents and revealed lower spikelet number, grain number, total grain weight and weight per grain when compared to parents. Thus, lowering of reactive oxygen species content at low light intensity coupled with long days and higher mean temperatures enabled the hybrids to complete their life cycle that resulted in overcoming the necrosis barrier in F1 progeny in wheat
Keyword
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: CSC-87-500
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||