The Eleventh Regional Wheat Workshop For Eastern ... - Cimmyt

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Introduction ofdisease and pest resistant wheat cultivars to Lesotho - Tolmay et al. these new cultivars to the particular environment could not be concluded due to insufficient data. Furthermore, farmers have not yet had the opportunity to evaluate the suitability of the new cultivars regarding purposes for which the crop is planted. It is therefore recommended that the evaluation of new useful cultivars be continued following this participatory on-farm approach. This can be achieved by strengthening both farmers' research capacities and the linkages between them, research agencies, and development organizations. Such an approach will aid the conservation of valuable locally adapted genetic resources and help farmers improve their position by I) gaining access to genetic resources that provide solutions for new threats and 2) expand their capacity to evaluate new cultivars and farming techniques. REFERENCES Boshoff, van Niekerk and Pretorius. 1999. Stripe rust: A new threat to wheat production in South Africa. In: Payne, T.S., D.G. Tanner, W. Mwangi, G. Varughese and H. van Niekerk, eds. Proceedings ofthe Tenth Regional Workshop for Eastern, Central and Southern Africa. 14-18 September 1998, Stellenbosch, South Africa. Collinson, M.P. 1989. Small farmers and technology in Eastern and Southern Africa. Journal ofInternational Development: 1:66-82. Moremoholo, L. and Purchase, 1.L. 1999. The release of Puseletso, a Russian wheat aphid (Diuraphis noxia) resistant cultivar in Lesotho. In: Proceedings ofthe Tenth Regional Workshop for Eastern, Central and Southern Africa. 14-18 September 1998, Stellenbosch, South Africa. Reeves, T.R. 1999. Sustainable intensification of agriculture. In: Sustainable Agricultural Solutions; the action report of the sustainable agriculture initiative. Ed: A.1. Fairclough, Novello Press Ltd., London. Rosenblum, M.L., Ts'iu, 1. and Moletsane, M., 1999. Farmer wheat (Triticum aestivum) varieties in the highlands of Lesotho. In: Participation and partnerships in extension and rural development. Proceedings of the 33 rd Annual Conference of the Society for Agricultural Extension, 11-13 May 1999, Bloemfontein, South Africa. Weinmann, H., 1966. Report on crop research in Lesotho 1960-1965. Ministry of Agriculture, Co-operatives and Marketing, Lesotho. Maseru, Lesotho. Questions and Answers: Colin Wellings: (1) I presume Tugela and Tugela-DN are closely related; (2) Have these cultivars been affected by the Hugenoot pathotype of yellow rust? (3) Comment: It will be important to monitor rust pathotypes in these highland summer cereal cropping locations. Perhaps trap nurseries could be considered for this. Answer: (1) Tugela and Tugela-DN are near isogenic lines differing only in RWA resistance; (2) The Tugela types are as yet not infected by the YR pathotypes present in Lesotho and RSA; (3) Due to the high altitude and weather conditions (ofthe site), it is an ideal location for rust traps - no fungicides are used in the area, allowing for natural epidemic development. Ravi P. Singh: The environment of Lesotho is completely different from South Africa, so are you planning to evaluate genotypes adapted to highlands that are similar to the Lesotho environment? Answer: Yes. Collaboration with international breeders to evaluate suitable entries is needed to improve the chances of finding successful introductions. Agreements among local stakeholders need to be reached on all interventions. 339
Introduction ofdisease and pest resistant wheat cultivars to Lesotho - Tolmay et al. Ravi P. Singh: It will be better not to grow one of the main South African cultivars in the Lesotho highlands to avoid the evolution of a new race that can cause a problem in South Africa. Answer: Yes, we agree. Better adapted and more suitable lines to introduce are being sought. Table 1. Yield (t/ha) of six wheat cultivars, at two planting dates in Makoabateng, Lesotho. Yield (tlha) Cultivar Early planting ····L~te planting . . "",. .' 8 October 1999 23 Noveiriber 1999 Elands 3.93 3.50 SST 333 3.60 4.00 Puseletso 3.75 2.45 Tugela - 2.40 Bolane - 3.00 Telo Nts'o - 2.60 340
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The Eleventh Regional Wheat Worksh
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CIMMYT® (www.cimmyt.cgiar.org) is
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Table a/Contents 105 Developing whe
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Table o/Contents 366 Delayed nitrog
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e>..... I Countries participating i
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Welcome on behalfo/CIMMYT Board a/T
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Welcome on behalfofCIMMYTBoard ofTr
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CIMMYT'S NE\V APPROACH TO ADDRESS W
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CIMMYT's Global Project 5 - Pfeiffe
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SOURCES OF VARIATION FOR GRAIN YIEL
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Sources ojvariation Jar grain yield
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Sources ofvariation for grain yield
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Germplasm enhancement through molec
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Germplasm enhancement through moiec
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Gennplasm enhancement through molec
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Germplasm enhancement through molec
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QUALITY OF ETHIOPIAN DURUM WHEAT CU
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Quality ofEthiopian durum wheat cul
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On-farm demonstration ofimproved du
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On-farm demonstration ofimproved du
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Identification o/Ethiopian wheat cu
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Identification ofEthiopian wheat cu
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Identification ojEthiopian wheat cu
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GENETIC IMPROVEMENT IN GRAIN YIELD
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Genetic improvement in wheat grain
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Genetic improvement in wheat grain
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(;p.np.tir. imnrovp.mp.nl in WhP.fl
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Increasing yield potential for marg
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Increasing yield potentialfor margi
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Increasing yield potentialfor margi
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BREAD WHEAT YIELD STABILITY ANI) EN
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Bread wheat yield stability and env
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Milling and baking quality ofEthiop
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Response ofbread wheat genotypes to
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Response o/bread wheat genotypes to
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Developing wheat varieties for drou
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MILLING AND BAKING QUALITY OF SOUT
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Milling and baking quality ofSouth
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Milling and baking quality ofSouth
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Milling and baking quality ofSou th
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Response o/wheat genotypes to sowin
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Response ofwheat genotypes to sowin
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Mixtures offour wheat cultivars in
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Mixtures offour wheat cuttivars in
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THE ASSESSMENT AND SIGNIFICANCE OF
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Assessment a/pathogenic variability
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Assessment o/pathogenic variability
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Assessment ofpathogenic variability
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Assessment a/pathogenic variability
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SOURCES AND GENETIC BASIS OF VARIAB
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Sources ofvariability ofgenes for y
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PERFORMANCE OF FOUR NEW LEAF RUST R
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Performance offour new leafrust res
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HOST RANGE OF WHEAT STEM RUST IN ET
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Host range ofwheat stem rnst in Eth
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STABILITY OF STEM RUST RESISTANCE
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Stability ofstem rust resistance in
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Stability ofstem rust resistance in
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Field response o/bread wheat genoty
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Field response ofbread wheat genoty
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Field response a/bread wheat genoty
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Necessary to app~y insecticides to
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Necessary to apply insecticides to
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Necessary to apply insecticides to
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RUSSIAN WHEAT APHID RESISTANT WHEAT
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Integrated control using Russian wh
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Integrated control using Russian wh
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Development oflinear equations for
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BREEDING FOR DISEASE RESISTANCE IN
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Breeding f or disease resistance in
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Breedingfor disease resistance in w
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Breedingfor disease resistance in w
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SPATIAL TOOLS FOR WHEAT RESEARCH I
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Spatial tools for wheat research -
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Spatial toolsjor wheat research - H
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Response ofsome durum wheat landrac
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Response a/some durum wheat landrac
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Agronomic and economic evaluation o
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Effects ofsoil waterlogging on conc
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Effects a/soil waterlogging on conc
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Effects ojsoil waterlogging on conc
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EFFECT OF CROP ROTATION AND FERTILI
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Effect ofcrop rotation andfertilize
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Effect ofcrop rotation and fertiliz
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Effect ofcrop rotation andfertilize
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Effects oftillage and cropping sequ
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Page 301 and 302: Survey ofweed community structure -
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Page 311 and 312: EVALUATION OF HERBICIDES FOR THE CO
Page 313 and 314: Evaluation ofherbicides for the con
Page 319 and 320: Effects ofsurface drainage methods
Page 325 and 326: CROP ROTATION EFFECTS ON GRAIN YIEL
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Page 345 and 346: THE INTRODUCTION OF DISEASE AND PES
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Page 351 and 352: Reducing mechanical harvesting loss
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Page 361 and 362: ON-FARM EVALUATION OF THE RESPONSE
Page 363 and 364: Response offour bread wheat varieti
Page 369 and 370: TIMING NITROGEN APPLICATION TO ENHA
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Page 379 and 380: RESPONSE OF WEED INFESTATION AND GR
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Page 389 and 390: FARMER PARTICIPATORY EVALUATION OF
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Farmer participatory evaluation o/b
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Client oriented research approach t
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Client oriented research approach t
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Economics offertilizer use on durum
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Economics oJJertilizer use on durom
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On-farm analysis ofdurum wheat prod
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A study o/the adoption o/bread whea
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A study ofthe adoption ofbread whea
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Farmer participatory evaluation ofb
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Farmer participatory evaluation ofb
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Eleventh Regional Wheat Workshop Pa
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