Quality Protein Maize under Low N and Drought Environments: Endosperm Modification, Protein and Tryptophan Concentrations in Grain
نویسندگان
چکیده
منابع مشابه
Effects of field conditions, low nitrogen and drought on genetic parameters of protein and tryptophan concentrations in grain of quality protein maize
Quality Protein Maize (QPM) has about twice the amount of lysine and tryptophan of normal maize and hence represents an important tool of correcting its deficiency in protein quality. However, the effects of low nitrogen and drought on genetic parameters such as gene action and combining abilities of protein quantity and quality of QPM are not known. To study how these genetic parameters are af...
متن کاملFunctional Genomics of Maize Endosperm Maturation and Protein Quality
Quality Protein Maize (QPM) is a hard kernel variant of the high-lysine mutant, opaque2. Using γ-irradiation, we created opaque QPM variants to identify opaque-2 modifier genes and to investigate deletion mutagenesis combined with Illumina sequencing as a maize functional genomics tool. A K0326Y-QPM deletion mutant (line 107) was null for the 27and 50-kD γ-zeins and abolished vitreous endosperm...
متن کاملγ-Zeins are essential for endosperm modification in quality protein maize
Zeins are essential for endosperm modification in quality protein maize" Essential amino acids like lysine and tryptophan are deficient in corn meal because of the abundance of zein storage proteins that lack these amino acids. A natural mutant, opaque 2 (o2) causes reduction of zeins, an increase of nonzein proteins, and as a consequence, a doubling of lysine levels. However, o2's soft inferio...
متن کاملGamma-zeins are essential for endosperm modification in quality protein maize.
Essential amino acids like lysine and tryptophan are deficient in corn meal because of the abundance of zein storage proteins that lack these amino acids. A natural mutant, opaque 2 (o2) causes reduction of zeins, an increase of nonzein proteins, and as a consequence, a doubling of lysine levels. However, o2's soft inferior kernels precluded its commercial use. Breeders subsequently overcame ke...
متن کاملStudy on protein Changes in wheat under drought stress
A study was performed to study the effect of drought stress on protein changes of five wheat genotypes. Wheat genotypes were planted in early November, growing season of 2008-2009. The experiment was carried out in a factotial design with three replications. Two drought stress levels (irrigated and Non irrigated) and five genotype of wheat (F103-L-1-12//PONY/OPATA, F1.158/FDL//BLO/3/SH14414/CRO...
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ژورنال
عنوان ژورنال: Agricultural Journal
سال: 2012
ISSN: 1816-9155
DOI: 10.3923/aj.2012.327.338