Jag Shorán

Indian Institute of Wheat and Barley Research

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Ravish Chatrath

Indian Institute of Wheat and Barley Research

BS Tyagi

Sri Karan Narendra Agriculture University, Jobner

B. S. Tyagi

Indian Institute of Wheat and Barley Research

Gyanendra Pratap Singh

National Bureau of Plant Genetic Resources

Nvpr Ganga Rao

International Crops Research Institute for the Semi-Arid Tropics

Gyanendra Singh

Deenbandhu Chhotu Ram University of Science and Technology

M. S. Saharan

Indian Agricultural Research Institute

Sushila Kundu

Indian Institute of Wheat and Barley Research

SK Singh

Indian Council of Agricultural Research

B. Mishra

Adesh University

Cooperative Institutions

Indian Institute of Wheat and Barley Research

Indian Council of Agricultural Research

Indian Agricultural Research Institute

Banaras Hindu University

Chaudhary Charan Singh Haryana Agricultural University

Govind Ballabh Pant University of Agriculture and Technology

Krishi Vigyan Kendra, Ghatkhed Amravati

Institute of Medical Sciences

Indian Agricultural Statistics Research Institute

Punjab Agricultural University

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Leaf blight (Bipolaris sorokiniana) resistant wheat genetic stock (registered)

Indian Phytopathology (2007)

D.P. Singh Jag Shorán Pankaj Kumar

Bipolaris

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Allelic variations of functional markers for polyphenol oxidase (PPO) genes in Indian bread wheat (Triticum aestivum L.) cultivars

Journal of Genetics (2009)

Rajender Singh Umesh Goutam Raj Kumar Gupta Girish Chandra Pandey Jag Shorán

10.1007/s12041-009-0047-5

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Identification of Genes Causing Hybrid Necrosis in Bread Wheat

Crop improvement (2006)

Gyanendra Pratap Singh B. S. Tyagi Ravish Chatrath Jag Shorán Shweta Singh

Seedling mortality due to hybrid necrosis was observed in the cross PBW 443/HUW 533. Detailed information was generated by developing BC1, BC2 and F2 generations and evaluating them in the field along with parents and F1,s to examine the genetics of necrosis. The results revealed that this particular combination has varying degree of hybrid necrosis in F1, BC1 and F2 generations but the BC2 generation showed high degree of necrosis as all the plants died before the crown root initiation (CRI) stage. The present study suggests that some seeds may be obtained by crossing even the carrier of Ne1 and Ne2 genes through bridge crosses i.e. involving a third parent which carry inhibitor gene or a gene that modifies the complementary action of Ne1 and Ne2 genes.

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DBW 39: A new bread wheat variety

Indian Journal of Genetics and Plant Breeding (The) (2010)

Gyanendra Singh Jag Shorán Ravish Chatrath DV Singh B. S. Tyagi

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Contribution of exotic germplasm in wheat breeding in India

Indian Journal of Plant Genetic Resources (2000)

Rajiv Sharma Jag Shorán

Indian wheat programme has released/identified about 212 wheat varieties till date since 1965. Of these, 162 varieties have exotic germplasm in their pedigree either as a direct release or as a parent in a cross. An increasing reliance on exotic germplasm threatens our local material. A judicious use of local germplasm from different sources is suggested to make further gains in productivity.

Germ plasm

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Grain yield improvement through increased assimilates and efficient partitioning of photosynthetes in bread wheat (Triticum aestivum L)

Tyagi Bs Jag Shorán Gyanendra Pratap Singh Jagdish Rane Bhuwan B. Mishra

Wheat is one of the most important cereal crop grown throughout the world. India now ranks second in terms of total wheat production in the world and for the last 9-10 years the total wheat production in the country has stagnated. One of the ways to break this yield plateau is to develop physiologically and morphologically efficient plant types that will have more photosynthate and better sink capacity. Wheat genotypes based on the long spike buitre germplasm are characterized by visually impressive sink and source capacity. Attempts have been made during the last two decades to exploit this genetic resource through further hybridisation with advance lines. Many physiological disorders have been cited as major constraints in improving grain yield utilizing these genotypes. In view of this, an investigation was carried out to assess the intra-spike assimilate variability in selected long spike genotypes to provide genetic and physiological explanations for poor grain filling & development. Extent of genetic variability in distribution of assimilate within the spike was estimated. The increase in number of grains in spike was associated with reduction in individual grain weight in general, which was more conspicuous in distal part of the spike. This may be due to the competition for assimilates or poor translocation efficiency as the genotypes with more biomass accumulation were found to support better grain growth even at distal part of the spike. In the present paper, it has been demonstrated that increased biomass achieved by agronomic practices or genetic manipulations may enable long spike genotypes to yield more grains with desired grain size and weight, thereby increasing the per-unit productivity and production of wheat.

Germ plasm

Sink (geography)

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Genetic analysis of resistance to Karnal bunt caused by Neovossia indica in bread wheat (Triticum aestivum).

The Indian Journal of Agricultural Sciences (2010)

B. S. Tyagi Jag Shorán S. K. Singh M. S. Saharan Jitender Kumar

The genetics of Karnal bunt resistance was studied in populations derived from crosses involving resistant stocks (‘HD 29’ and ‘WL 6975’) and 1 highly susceptible cultivar (‘WL 711’). The plant material screened for Karnal bunt reaction consisted of F1, F2, BC1 and BC2 populations from resistant × susceptible and resistant × resistant crosses. The data recording for Karnal bunt incidence was done under optimal conditions for disease development with a mixture of virulent isolates prevailing in the northern states, Punjab, Haryana, Uttaranchal, Delhi, Himachal Pradesh and western Uttar Pradesh. The generation means analysis and scaling test was performed. In all the 3 cross combinations, almost all the scaling tests were found significant which indicated the presence of all 3 type of interactions. Six parameter model indicated the additive as well as dominance effects of genes significant in crosses obtained involving reaction types of resistant × susceptible (‘HD 29’ × ‘WL 711’) and resistant × resistant (‘HD 29’ × ‘WL 6975’) while additive, dominance and additive × additive; dominance × dominance effects were found significant only in resistant × resistant cross (‘WL 6975’ × ‘WL 711’).

Uttar pradesh

Dominance (genetics)

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PHSL-11 (IC566635; INGR09008), a Wheat (Triticum aestivum) Germplasm with High 1000– Grain Weight

Indian Journal of Plant Genetic Resources (2009)

SK Singh Nvpr Ganga Rao Jag Shorán Ravish Chatrath BS Tyagi

Germ plasm

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