Phenotypic characters associated with yield adaptation of wheat to a range of temperature conditions

Mashiringwani, N.A.; Schweppenhauser, M. A.

doi:10.1016/0378-4290(92)90077-m

Cited by 6 publications

(4 citation statements)

References 10 publications

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“…In general, the process of grain filling is regulated by both GFR and GFD (Gebeyehou et al, 1982;Wang et al, 2009); however, their relative contribution remains debatable. Mashiringwani and Schweppenhauser (1992) reported that genotypic differences in grain yield of wheat were due to differences in GFR. It indicates that genetic differences in final grain weight were related to differences in GFR rather than GFD as GFD and GFR is also influenced by rise in temperature.…”

Section: Discussionmentioning

confidence: 99%

Molecular investigations on grain filling rate under terminal heat stress in bread wheat (Triticum aestivum L.)

Ch¹,

P²,

ey³

et al. 2013

Afr. J. Biotechnol.

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Grain yield under post anthesis high temperature stress is largely influenced by grain filling rate (GFR). To investigate molecular basis of this trait, a set of 111 recombinant inbred lines (RILs) derived from Raj 4014, a heat sensitive genotype and WH 730, heat tolerant cultivar was phenotyped during 2009-2010 and 2010-2011 crop seasons, under field conditions. The difference in GFR (dGFR) between the timely and late sown conditions was used as a phenotypic parameter to find association with molecular markers, as parental lines exhibited significant difference for this trait. The mapping population showed clear-cut segregation pattern for differences in GFR between timely and late sown conditions. About 75% of the progenies showed no difference while 25% showed significant difference in GFR under high temperature stress created by late sown condition. To study the association of this trait with the markers, the parental lines were screened with 300 simple sequence repeat (SSR) microsatellite markers out of which 15% (45) were polymorphic between parental lines. These polymorphic markers were utilized for genotyping a subset, comprising of 43 RILs that had clear contrasting variation for dGFR. Regression analysis revealed significant association of dGFR of RILs with two markers viz., Xbarc04 and Xgwm314 with coefficients of determination (R 2) values of 0.10 and 0.06, respectively.

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Section: Discussionmentioning

confidence: 99%

Molecular investigations on grain filling rate under terminal heat stress in bread wheat (Triticum aestivum L.)

Ch¹,

P²,

ey³

et al. 2013

Afr. J. Biotechnol.

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“…The improvement of grain filling rate and grain weight per ear would appear to lead to increased grain yield of lines in all classes of adaptation, and wide adaptation to a range of temperature conditions. 244 Cold stresses during the reproductive development of spring wheat cause grain-set failure in the high altitudes (>1500 m) of the world. The period from around heading until anthesis is critically sensitive to cold temperature.…”

Section: Cold Temperature On Male Sterilitymentioning

confidence: 99%

Research advances in major cereal crops for adaptation to abiotic stresses

Maiti

Satya

2014

GM Crops & Food

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With devastating increase in population there is a great necessity to increase crop productivity of staple crops but the productivity is greatly affected by various abiotic stress factors such as drought, salinity. An attempt has been made a brief account on abiotic stress resistance of major cereal crops viz. In spite of good successes obtained on physiological and use molecular biology, the benefits of this high cost technology are beyond the reach of developing countries. This review discusses several morphological, anatomical, physiological, biochemical and molecular mechanisms of major cereal crops related to the adaptation of these crop to abiotic stress factors. It discusses the effect of abiotic stresses on physiological processes such as flowering, grain filling and maturation and plant metabolisms viz. photosynthesis, enzyme activity, mineral nutrition, and respiration. Though significant progress has been attained on the physiological, biochemical basis of resistance to abiotic stress factors, very little progress has been achieved to increase productivity under sustainable agriculture. Therefore, there is a great necessity of inter-disciplinary research to address this issue and to evolve efficient technology and its transfer to the farmers' fields.

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“…However, individual grain size is dependent on the rate and duration of grain development . Many researchers have attributed genotypic differences in grain yield of wheat to differences in the rate of grain filling (Housley et al ., 1982 ;Jenner & Rathjen, 1972a;Mashiringwani & Schweppenhauser, 1992 ;Nass & Reiser, 1975 ;van Sanford, 1985) . Many studies showed that genetic differences in final grain weight were related to differences in grain filling rate rather than differences in duration of grain growth (Jenner & Rathjen, 1972a ;Nass & Reiser, 1975 ;Pinthus & Sar-Sharlom, 1978) .…”

Section: Introductionmentioning

confidence: 99%

“…Differences in final grain mass observed between wheat genotypes were associated with the rate of grain dry matter accumulation (Bingham, 1967 ;33 Gebeyehou et al ., 1982 ;Housley et al ., 1982 ;Pinthus & Millet, 1978 ;Sofield et al ., 1977 ;van Sanford, 1985) over several seasons (Simmons & Crookston, 1979) . High grain growth rate was required for adapting genotypes to double cropping systems ( van Sanford, 1985), maritime conditions in Canada (Nass & Reiser, 1975) or a wide range of temperature conditions in Zimbabwe (Mashiringwani & Schweppenhauser, 1992) .…”

Section: Introductionmentioning

confidence: 99%

Genetic basis of grain filling rate in wheat (Triticum aestivum L. emend. Thell.)

et al. 1994

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Grain filling rate in wheat (Triticum aestivum L . emend . Thell .) positively influences grain yield under a wide range of conditions . The effective utilization of this trait in breeding depends on an understanding of its genetic control . A study was, therefore, conducted to determine the genetic basis of grain filling rate in six crosses of wheat . Higher order genic interactions and/or linkage were important in the genetic regulation of grain filling rate (GFR) in the majority of crosses . Additive ([d]) and dominance ([h]) gene effects were important in the control of GFR in main ears (ME) and whole plant ears (WPE) . Additive and additive x additive epistatic effects were the most important in the genetic control of GFR in last ears (LE) . Location effects on genetic effects for GFR were significant (P < 0.05) in all ear types of some crosses except in ME. Genotype x environment interaction effects were important (P < 0 .001) in LE and WPE .It was concluded that the inheritance of GFR is complex and is dependent on ear type . Breeding procedures that facilitate the exploitation of non-additive and additive gene effects were recommended for the genetic improvement of grain filling rate of wheat .

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Phenotypic characters associated with yield adaptation of wheat to a range of temperature conditions

Cited by 6 publications

References 10 publications

Molecular investigations on grain filling rate under terminal heat stress in bread wheat (Triticum aestivum L.)

Molecular investigations on grain filling rate under terminal heat stress in bread wheat (Triticum aestivum L.)

Research advances in major cereal crops for adaptation to abiotic stresses

Genetic basis of grain filling rate in wheat (Triticum aestivum L. emend. Thell.)

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