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Assessment of genetic diversity in a collection of red rices

KrishiKosh

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Title Assessment of genetic diversity in a collection of red rices
 
Creator Chaudhry, Narender
 
Contributor Ahuja, Uma
 
Subject Productivity, Marketing, Economics, Markets, Biological phenomena, Research methods, Television, Attractants, Retail marketing, Sales
 
Description Rice (Oryza sativa L.) is one of the important world’s cereal crops,
providing staple food for nearly one-half of the global population. It is the only
cereal where weedy, wild and cultivated forms are found. In traditional rice
growing areas of Asia, in addition to white, rices of red, purple, black, brown,
yellow and green colors are known and grown. Rices with red bran layer are
called red rices. Some of the wild, cultivated and most of the weedy rices are red.
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Wild species of Oryza are an important source of useful genes. Red
rice varieties have tolerance towards stress environments and resistance against
important pest, diseases and storage pests. Off type plants having red seeds are
considered as weedy although a few of them are colorless. This form of rice is
found mixed into cultivated rice fields and shares traits common in both
cultivated and wild rice.These are termed ‘Fat beggars’ as they accept what is
offered and thrive. These are most difficult to eradicate. They cross with
cultivated varieties and produce herbicide tolerant progeny. These have been
studied for understanding the evolution of rice and as germplasm tolerant to
adverse conditions for rice breeding. At present no cultivated red or wild variety
is reported from Haryana though weedy rices are found throughout the state.
There is no information available on weedy rice except eradication in Haryana. A
collection of cultivated, weedy and wild rices were evaluated for variability at
morphological and molecular level.Collection of weedy rices showed significant
variability at morphological and molecular level and shared many traits with
wild, cultivated white and red rices.
Some of weedy rices can be further evaluated for important traits.
Diversity at morphological level did not coincide with diversity at molecular
level as compared by Euclidean square and UPGMA cluster analysis. 9 primers
could be of significance in identification of red rices.One primer i.e Pr836 was
found to be unique to weedy rices and giving unique bands in W8 which is long
grain like basmati rice, hence can be used to detect adulteration.
 
Date 2016-11-16T08:52:24Z
2016-11-16T08:52:24Z
2009
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/85746
 
Language en
 
Format application/pdf
 
Publisher CCSHAU