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R.A. Fischer
International Maize and Wheat Improvement Center
15Publications
13H-index
1,133Citations
Publications 15
Newest
#1R.A. FischerH-Index: 13
#2Derek ByerleeH-Index: 39
Last.G.O. EdmeadesH-Index: 33
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This paper was produced for the FAO Expert Meeting on How to Feed the World in 2050 (Rome, 24-26 June 2009).
#1MoinuddinH-Index: 1
#2R.A. FischerH-Index: 13
Last.Matthew P. Reynolds (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 61
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Six greenhouse and three field experiments were conducted at the International Center for Improvement of Maize and Wheat (CIM-MYT), Mexico, on bread wheat (Triticum aestivum L.) genotypes to ascertain the role of osmotic adjustment (OA) in sustaining grain yield and its stability under water deficit conditions. Under simulated water deficit conditions of the greenhouse and field, the genotypes differed considerably regarding OA, ranging from 0.31 to 0.86 MPa and from 0.60 to 0.99 MPa, respective...
#1R.A. Fischer (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 13
#2F. Santiveri (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 2
Last.I.R. Vidal (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 2
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#1R.A. Fischer (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 13
#2F. Santiveri (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 2
Last.I.R. Vidal (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 2
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Abstract Cropping systems in the sub-humid tropical highlands are characterised by continuous cultivated cereal monoculture, leading to serious erosion and fertility decline. There is a lack of information on improved agronomy, in particular crop rotation, the use of legumes, reduced tillage and crop residue retention, designed to counter these problems. Over the period 1991–1995 an experiment was carried out in the central highlands of Mexico, at El Batan (latitude 19°31′N, longitude 98°50′W, a...
Theory (Craig and Gordon 1965; Dongmann et al. 1974; Sternberg et al. 1986; Farquhar and Lloyd 1993) suggests that the oxygen isotope ratio (d 18 O) of plant material should reflect the evaporative conditions under which the material was formed, so that differences in stomatal conductance should show up in plant d 18 O. To test this theory we measured the oxygen isotope ratio of organic matter from flag leaves at anthesis and grain at harvest from eight cultivars of spring wheat (Triticum aestiv...
#1M.A. Bell (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 2
#2R.A. Fischer (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 13
Last.K.D. Sayre (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 29
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Abstract Genetic and agronomic contributions to yield gains for wheat ( Triticum aestivum L.) in the Yaqui Valley of northwest Mexico were estimated for the period from 1968–1990. Five problems associated with estimating sources of yield gains were considered, namely: (1) adjusting yield gains for variation in weather over the study period; (2) considering annual cultivar-by-weather interactions, which are potentially problematic when relative yields of cultivars are generated over only part of ...
#1Shi-Ying Wang (MSU: Michigan State University)H-Index: 2
#2Richard W. Ward (MSU: Michigan State University)H-Index: 18
Last.Urs Schulthess (MSU: Michigan State University)H-Index: 10
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Abstract Differences in response to vernalization in wheat ( Triticum aestivum L.) were quantified through controlled environment experiments with 26 lines with diverse geographical origins. Vernalization treatments of 0 to 56 d were applied to plants at their first leaf stage. All plants headed irrespective of duration of vernalization treatment. Vernalization response was assessed through the change of final leaf number (FLN) on the main stem at heading. Five lines did not respond to vernaliza...
#1Shi-Ying Wang (MSU: Michigan State University)H-Index: 2
#2Richard W. Ward (MSU: Michigan State University)H-Index: 18
Last.Urs Schulthess (MSU: Michigan State University)H-Index: 10
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Abstract Vernalization treatments of 0 to 70 d initiated when 0 to 8 leaf tips were visible were applied to plants of the winter wheat ( Triticum aestivum L.) cultivars Pioneer 2548 and Augusta. All plants headed irrespective of duration of vernalization. Unvernalized plants of Pioneer 2548 and Augusta had mean final leaf numbers (FLN) of 20.8 ± 1.3 and 21.7 ± 1.0, respectively. Increased duration of vernalization generally reduced FLN within an age treatment until an age-dependent point of vern...
#1Matthew P. Reynolds (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 61
#2Edmundo Acevedo (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 24
Last.R.A. Fischer (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 13
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Abstract Field experiments were conducted with modern semidwarf spring wheat cultivars representing a range of yield potential in order to compare their adaptation to levels of interplant competition for resources. Levels of competition were altered, in both leaf canopy and underground, by manipulating rows of plants in eight-row yield plots. Competition for light was decreased by bending adjacent rows away from the central two rows thus permitting greater penetration of light to lower leaves of...
#1S. S. Dhillon (PAU: Punjab Agricultural University)H-Index: 4
#2R.A. Fischer (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 13
Abstract Date of sowing experiments were established under irrigation in Ludhiana, in the Indian state of Punjab, from 1985 to 1992, using a total of 66 spring wheat ( Triticum aestivum L.) cultivars and 10 sowing dates. To study interactions among cultivars, sowing dates and years and to estimate losses with delayed sowing for grains m −2 and grain yield, an orthogonal subset of four years, three cultivars (PBW 34, PBW 154 and PBW 226) and seven sowing dates was used. To study the relationship ...
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