Authors:S. Sareen, N. Bhusal, G. Singh, B.S. Tyagi, V. Tiwari, G.P. Singh and A.K. Sarial
Heat stress is a matter of a great concern for the wheat crop. Heat stress usually either hastens crop development or shortens the grain filling duration, which severely reduces grain yield. Being a complex trait, understanding the genetics and gene interactions of stress tolerance are the two primary requirements for improving yield levels. Genetic analysis through generation mean analysis helps to find out the nature of gene actions involved in a concerned trait by providing an estimate of main gene effects (additive and dominance) along with their digenic interactions (additive × additive, additive × dominance, and dominance × dominance). In the present investigation, we elucidated the inheritance pattern of different yield contributing traits under heat stress using different cross combinations which could be helpful for selecting a suitable breeding strategy. Thus six generations of five crosses were sown normal (non-stress, TS) and late (heat stress, LS) in a randomized block design with three replications during two crop seasons. The model was not adequate for late sown conditions indicating the expression of epistatic genes under stress conditions. The traits i.e. Days to heading (DH), Days to anthesis (DA), Days to maturity (DM), Grain filling duration (GFD), Grain yield (GY), Thousand grain weight (TGW), Grain weight per spike (GWS) and Heat susceptibility index (HSI) under heat stress conditions were found under the control of additive gene action with dominance × dominance interaction, additive gene action with additive × dominance epistatic effect, dominance gene action with additive × additive interaction effect, additive and dominance gene action with dominance × dominance interaction effect, additive gene action with additive × dominance epistatic effect, additive gene action with additive × additive interaction effect and dominance gene action with additive × additive interaction effect, respectively.
Kielland-Brandt, M.C., Nillson-Tillgren, T., Peresen, J.G.L., Holmberg, S., Gjermansen, C.: Approaches to the genetic analysis and breeding of brewer's yeast. In: Yeast genetics. Fundamental and applied aspects (eds J.F.T. Spencer, D.M. Spencer and A
Authors:Balázs Murnyák, Rita Szepesi and Tibor Hortobágyi
.: Neuropathology and molecular genetics of neurofibromatosis 2 and related tumors. Brain Pathol., 1995, 5 (2), 163–172.
Van den Munckhof, P., Christiaans, I., Kenter, S. B., et al.: Germline SMARCB1 mutation predisposes to
The origin of information for 5 genetics journals was traced for the years 1975, 1978 and 1982. Maps of the interrelationships between cited journals indicate that the information for genetics journals originates with the biochemical journals and passes down to the genetics journals via the multidisciplinary science journals. The 5 genetics journals can be divided into 2 levels: Level 1 — those journals that never cite each other but cite level 2 journals; Level 2 — those journals that serve as a source of information for level 1 journals. The use of level 2 journals by level 1 journals declines from 1975 to 1982 because of a decline in citations by two of the level 1 journals.
's yeast. In Spencer, J. F. T., Spencer, D. M., Smith, A. R. W. (eds): Yeast Genetics. Fundamental and applied aspects. Springer-Verlag, New York. 1983. pp. 421-437.
Approaches to the genetic analysis and breeding
The paper points out that the characteristic properties of general social networks are reflected in co-authorship patterns
of theoretical population genetics as studied from 1900 to 1980. The results are consistent with the analyses of bibliographies
where the co-authorship networks in invisible colleges probably have shown the same behavioural patterns as the non-scientific
populations. The patterns of behaviour are portrayed in two-dimensional as well as three-dimensional representations of co-authorship
data in theoretical population genetics.
Authors:B. Gupta, Suresh Kumar and C. Karisiddappa
Traces the growth of collaborated and funded research as reflected in research papers in theoretical population genetics research
speciality from 1916–80 through a case study. Analyses the proportion and extent of collaborated papers, averge number of
authorship per paper, and collaborative coefficient index of research papers thereby giving an overall perspective of the
growth of professionalism in the field. Studies the relation between collaboration, productivity, and funding of research
papers in theoretical population genetics. Classifies the total collaborative papers/authors by type of collaboration and
studies the trends and shifts in the nature and type of collaborative research over the years.