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1 edition of Evaluation of rice, germplasm for biotic stresses found in the catalog.

Evaluation of rice, germplasm for biotic stresses

Evaluation of rice, germplasm for biotic stresses

final report of ICAR research network programme, 1993-1998

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Published by Directorate of Rice Research, Indian Council of Agricultural Research in Hyderabad .
Written in


Edition Notes

Statement[compiled and edited A.P.K. Reddy ... et al.].
ContributionsReddy, A. P. K., India. Directorate of Rice Research.
The Physical Object
Pagination1 v. (various pagings) ;
ID Numbers
Open LibraryOL16912697M
LC Control Number2008330081

This book covers the most recent advancements and research strategies of molecular breeding, transgenic approaches, and other tools for effective biotic stress management in rice. This book should find a prominent place on the shelves of new plant breeders, biotechnologists, plant pathologists and entomologists working in academic and. Abstract: Rice (Oryza sativa L.) is among the most important food crops that provide a staple food for nearly half of the world’s population. Rice crops are prone to various types of stresses, both biotic and abiotic. Biotic stresses include insect pests, fungus, bacteria, viruses, and herbicide toxicity.

The objective in the selection program is development of germplasm and parental lines with wide adaptation, improved grain yield potential and resistance to multiple abiotic or biotic stresses. Research evaluated the flavonoid profile of sorghums to determine the . This book is focused on biotic stress of rice and its management. Rice serves as a host for a number of diseases and insect-pests: 54 in the temperate zone, and about in tropical countries. Of the major diseases of rice, 45 are different types fungal diseases, 10 different bacterial, 15 different viral, and 75 are insect-pests and nematodes.

The biotic grain yield per plant, Chlorophyll content, analysis, respectively. The results revealed that the crosses,GZ Introduction Rice (Oryza staiva L.) is one of the world's most important crops, providing a stable food for nearly half of the global population (FAO ). Almost 90% of the rice is growing and consumed in Asia. In addition, accessions are also grown for detailed evaluation against biotic (Blast, Bacterial blight and BPH) and abiotic (Submergence and Salinity) stresses. This programme provided unique opportunity to the researchers across the country to have a glance of variability in rice germplasm accessions grown in the field and select.


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Evaluation of rice, germplasm for biotic stresses Download PDF EPUB FB2

Tefera Tolera Angessa, Chengdao Li, in Exploration, Identification and Utilization of Barley Germplasm, Biotic Stress Factors. Biotic stress factors are caused by pathogens, insect pests, weeds, or intraspecific competition for resources (Hill et al., ).The importance of biotic stress factors to cause yield or quality loss depends on the environment and thus varies from region to.

Abstract. Sheath blight disease of rice caused by the soilborne fungal pathogen Rhizoctonia solani has been a major disease of rice with a serious threat to stable rice production worldwide. Although various cultural practices have been used to manage the disease, it is advantageous and important to screen rice germplasm and identify resistant rice cultivars for more effective disease Cited by: Book Description.

This book, Biotic Stress Management in Rice: Molecular Approaches, addresses biotic stress of rice and its management through molecular approaches. It focuses on the biotechnological aspects of rice with the aim of reducing the fungicide and insecticides and ultimately ensuring safety of rice as a food as well as the environment.

According to Hossain (), abiotic stresses affect rice cultivation more than the biotic stresses. Improving the resistance to abiotic stresses will increase agricultural productivity and extend cultivatable areas of rice. There is, therefore, a strong demand for rice cultivars resistant to abiotic by: 4.

Genetic and Genomic Resources For Cereals Improvement is the first book to bring together the latest available genetic resources and genomics to facilitate the identification of specific germplasm, trait mapping, and allele mining that are needed to more effectively.

Evaluation of germplasm is essential from following angles: (i) To identify gene sources for resistance to biotic and abiotic stresses, earliness, dwarfness, productivity and quality characters. (ii) To classify the germplasm into various groups.

(iii) To get a clear picture about the. Goals / Objectives The long-term objective of this project is to better understand rice responses to pests, pathogens, and weather stress in the environment, and to use that information to enhance pest protection and production efficiency for a more sustainable U.S.

rice production. Over the next 5 years we will focus on the following objectives: Objective 1: Map rice genes associated with. The major rice production constraints in the region are large acreage under traditional cultivars, biotic and abiotic stresses, and lack of wide scale technological intervention.

Rice (Oryza sativa L.) productivity is affected by several biotic and abiotic stresses. The genetic variability for some of these stresses is limited in the cultivated rice germplasm. GERMPLASM CONSERVATION The Germplasm has to be maintained in such a state that there is minimum risk for its loss and that either it can be planted directly in the field or it can be prepared for planted for planting with relative ease.

Ex-situ Conservation - Germplasm conservation is attempted outside or away from its natural habitat. In-situ. Rice (Oryza sativa) is the staple food for more than billion people worldwide. Yield levels in Asia have tripled and are expected to increase by 70% over the next 30 years due to population growth.

In the US, Arkansas accounts for more than 50% of rice production. Over the last 68 years, rice production has continued to grow in Mississippi, placing it in fourth place after Arkansas.

In addition, accessions are also grown for detailed evaluation against biotic (Blast, Bacterial blight and BPH) and abiotic (Submergence) stresses. This programme provided unique opportunity to the researchers across the country to have a glance of variability in rice germplasm accessions grown in the field and select desirable accessions.

Evaluation of rice (Oryza sativa L.) germplasm for biotic and abiotic stresses and their genetic diversity using SSR markers Article (PDF Available) October with Reads How we measure Author: Santosh Sawardekar.

ASSESSMENT OF LENTIL GERMPLASM WITH RESPECT TO AGROMONIC PERFORMANCE AND MAJOR BIOTIC STRESS N.K. Gautam, Mohar Singh, Z. Khan, Anirban Roy, Jameel Akhtar and Babu Ram National Bureau of Plant Genetic Resources, Pusa, New Delhi Received: Accepted: ABSTRACT. Screening for salt stress tolerance at seedling stage: When water is limited, problems can occur with high salt build up in the soil that damage the growth of young rice picture is an example where 20 different cultivars are being evaluated for tolerance to salt using 6 different levels of salt concentrations in a hydroponic system.

Drought and salinity are major climate-related risks for sustainable rice production. Designing of abiotic stress tolerant cultivars is needed to enhance food security under future climatic uncertainties. The major bottleneck to accomplish this goal is the narrow genetic base of US rice germplasm, which needs to be expanded through introgression of novel abiotic stress tolerance genes from.

Evaluation of germplasm is essential from following angles. To identify gene source for resistance to biotic and abiotic stresses, earliness, dwarfness, productivity, and quality characters. To classify the germplasm into various groups. To get a clear. Agriculture, Rice, Abiotic, Biotic, Drought.

Introduction. Rice as an oat grain it is most broadly expended staple food everywhere throughout the world, particularly in Asia. It is the farming product with the third-most noteworthy overall creation, after sugarcane and : Rapolu Shyamsunder. The Standard Evaluation System (SES) for Rice is one of the most re-quested IRRI publications that is highly utilized by rice scientists world-wide.

It provides a common nomenclature and standardized scales for assessing rice agronomic performance and classifying rice responses to biotic and abiotic stresses.

The present study was carried out to screen the 55 rice germplasm for biotic and abiotic stresses and their genetic diversity analysis by using 18 microsatellite markers pairs distributed throughout the genome.

Blast resistance alleles were observed in the genotypes viz., Karjat, Karjat-1. Rice is the staple food source for over half the world’s population. In Bangladesh, rice production occurs over an area of million hectares (ha), generating million tons of rice Cited by: 4.

This collection is the second largest such collection in the world. Dr. Nelson has released more than 20 high-yielding varieties derived from exotic germplasm. Other research efforts include identifying soybean germplasm with tolerance to abiotic and biotic stresses, and the identification and modification of soybean seed composition.Rice Genotypes with SUB1 QTL Differ in Submergence Tolerance, Elongation Ability during Submergence and Re-generation Growth at Re-emergence.

Submergence tolerance is an important trait where short term flash flooding damages rice. Tolerant landraces that withstand submergence for 1–2 weeks were identified.