Detection of QTLs on panicle and grain number in rice (Oryza sativaL): a review
Journal Title: International Journal of Farming and Allied Sciences - Year 2015, Vol 4, Issue 4
Abstract
Effective panicle number, grain number, and grain weight are the three components of rice yield, of which grain number shows the highest variation and makes the largest contribution to yield output.Rice panicle number per plant is a grain yield component that directly influences rice yield. The identification of the genes controlling panicle number will play a vital role in high-yield rice breeding.Studies on QTL of panicle number in rice are limited to morphological description and primary mapping.In a study, is reported that the qPN1 gene affects panicle number per plant and several other agronomic traits, using CSSLs derived from Nipponbare and Guangluai 4. Rice grain number is quantitatively inherited and a great deal of quantitative trait locus (QTL) mapping for grain number have been conducted using various mapping populations. recently, Gn1a, a QTL located on chromosome 1 that increases grain number in rice, and elucidated the molecular mechanism of this gene. Panicle morphology and grain number are influenced by the development of the panicle main axis, primary and secondary branches, spikelet development, and developmental phase transitions. Grain number is linearly correlated with total plant N content. Application of nitrogen fertilizers prior to the panicle initiation stage is known to affect inflorescence development and increase flower numbers per panicle.
Authors and Affiliations
Mohammad Noroozi, Ali Sattari, BA-fakheri
Keywords
Related Articles
- EP ID EP32773
- DOI -
- Views 353
- Downloads 0
Library research, some strategies for weed management in organic farming
organic farmers struggling to develop effective and economical weed management practices are not alone. Weed control in organically managed special attention to preventing weed problems before they start. Cover crops p...
An Assessment of Groundwater Quality for Agricultural Use (Case Study: Loor plain, Khouzestan, Iran)
Hydrochemistry of groundwater in Loor plain, Iran was used to assess the quality of groundwater for determining its suitability for agricultural purposes. Physical and chemical parameters of groundwater such as electri...
Evaluation of relationship between grain yield and yield components in Sesame genotypes
In order to evaluate the grain yield and yield components in Sesame genotypes, an experiment was conducted on 25 internal and external agricultural Sesame in a randomized complete block design in research farm of Khair...
Review: Breeding for Resistance to Sheath blight in rice
Sheath blight (ShB) disease, caused by Rhizoctonia solani, is an economically important rice disease worldwide, especially in intensive production systems. Several studies have been conducted to identify sources for Sh...
Germination reduce in Borage (Borago officinalis L.) seed under seed deteriorating conditions
Borage (Borago officinalis L.) It is an important vegetable crop which cultivated in some countries including Iran. The effect of accelerated aging (AA) was studied in Borage seeds. The Borage seeds were exposed to hig...