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Plenary session 2 : GENETICS AND GENOMICS IN RICE BREEDING - YIELD AND NUTRITION
Chairman : Dr. B.N.Singh
Co Chairman : Dr. S.R. Sree Rangasamy
Rapporteures : Dr. M.Maheshwaran and Dr. A. John Joel
Lecture 1 : "Green Super Rice : Achievements and advances" by
Dr. Jauhar Ali, IRRI
Dr.Jauhar Ali presented the concept of Green Super Rice (GSR) and explained on how stable and sustainable yields can be achieved using lesser inputs. He explained IRRI-GSR breeding strategy which is a ecosystem based approach. The outcome of the research is the identification of a promising drought and salinity tolerant GSR line IR83140-B-11-B. The integration of conventional and molecular approaches and ecosystem based screening was well discussed and accepted. International cooperation is called for to develop and test GSR.
Lecture 2 : "Biotechnology driven pre-breeding : Vision of BASF to develop superior rice hybrids" by Dr Ernst, BASF, Belgium.
A comprehensive data on the global area, production and productivity level of various rice producing countries and the reason for low productivity in some of theAsian countries were presented and discussed. Yield being the great challenge in the global agriculture, Dr. Ernst explained the need for redefining the plant breeders tool box. The importance of conventional breeding technologies and a rapid phenotyping programme initiated by BASF was also depicted which emphasized the importance of strengthening the present day breeding programme through pre-breeding and efficient phenotyping through advanced phenomics facilities.
Lecture 3 : "Nutritional enhancement of rice endosperm and mining for novel genes against biotic and abiotic stress of rice" by Dr. Navreet Bhullar, ETH, Switzerland.
Dr.Navreet explained the concept of biofortification of rice endosperm. Experiments to find the storage of ferritin in rice endosperm, yellow strip like protein and micronutrients synthesis and uptake was explained. The molecular methods utilized to find out novel genes for blast resistance
were also discussed.
Lecture 4 : "Improvement of iron and zinc in rice variety through conventional and molecular approaches" by Dr.Raveendra Babu.
Dr.Raveendra Babu, informed the gathering on the availability of micronutrients like Iron and Zinc in rice land races and possibility of genetic enhancement of these two nutrients. His experimental results showed that there is no relation between Fe and Zn with yield and this will give a great impetus to the breeders involved in biofortification of rice to proceed with the selection process. The utilization of land races for biofortification breeding programmes was well addressed.
Lecture 5 : "Genome wide variation between elite lines of indica rice discovered through whole genome resequencing" by Dr. S. Goplakrishnan.
Dr.S. Gopalakrishnan, in his presentation on the resequencing, was able to explain the pair wise polymorphism happening in genes. This understanding will be useful to find genetic polymorphism occurring in rice inbred population. The resequencing approach will be of great help to the breeders looking for variability within a homozygous population.
Lecture 6 : "Genetic engineering for semi dwarf rice using RNA interference(RNAi)" by R.A. Bindhushree.
Dr.Bindhushree explained the concept of RNAi technology and its application in development of dwarf rice genotypes through gene silencing approach. The experiment in progress in this regard was presented.
Lecture 7 : "Structural and functional analysis of glyoxalate promoter from rice" by Dr. L. Arul.
Dr.Arul presented the methodology involved in developing a novel promoter for the expression of glyoxalate in rice and explained its structural and functional analysis through GUS expression. The application of this promoter construct in genetic improvement of rice was also discussed.
This session mainly focused on the genetic enhancement for yield, nutritional quality and abiotic stress resistance through conventional and molecular approaches. Recent trends and research focus for the genetic improvement of rice for the above mentioned parameters were well discussed. To achieve yield enhancement in rice, genomic tools play a major role by helping in precise selection and reducing cycles of breeding. Conventional breeding methods supported by genomic tools will
help in better and efficient application in the genetic improvement to achieve our breeding goals.
X The integration of conventional and molecular approaches and ecosystem based screening is to be intensified and strengthened.
X The importance of conventional breeding technologies and a rapid phenotyping programme initiated by BASF was depicted which emphasized the importance of strengthening the present day breeding programme through pre-breeding and efficient phenotyping.
X Institutional approach toward pre breeding and efficient phenotyping need to be initiated /improved for rapid progress.