000			02442nam a22003857a 4500
001			G70465
003			MX-TxCIM
005			20211006081512.0
008			121211s ||||f| 0 p|p||0|| |
020			_a92-9146-058-3
040			_aMX-TxCIM
072		0	_aF30
072		0	_aH10
090			_aLook under series title
100	1		_aLieketso Moremoholo _uRegional Wheat Workshop for Eastern, Central and Southern Africa, 10; University of Stellenbosch, South Africa; 14-18 Sep 1998
110	2		_aCentro Internacional de Mejoramiento de Maiz y Trigo (CIMMYT), Addis Ababa (Ethiopia)
245	0	0	_aThe release of puseletso, a Russian wheat aphid (Diuraphis noxia) resistant cultivar, in Lesotho
260			_aAddis Ababa (Ethiopia) _bCIMMYT : _c1999
340			_aPrinted
520			_aIn April 1992, "PUSELETSO", which means "the regaining of that which we have lost" (due to the outbreak of RW A), was released. This cultivar has a Russian wheat aphid resistance gene called DN1, and is a backcross of Tugela (Kavkaz/Jaral "S") with DN1 (SA 1684) from ARC-Small Grain Institute, South Africa. This cultivar which is also acid tolerant was donated by the Smal1 Grain Institute to the Lesotho Ministry of Agriculture in 1992, to replace susceptible and poorly adapted (outdated) cultivars. Does this mean that R W A and acidity problems are solved in Lesotho? NO! The amount of seed available is not yet sufficient for all farmers and it is known that resistance breaking biotypes of aphids can font1 when constantly exposed to resistant cultivars. Since Lesotho practices dryland farming, it will always be subjected to drought and higher temperatures during September, which will cause a rapid increase in RWA numbers. Since not all Basotho farmers have adopted Puseletso and liming, they still suffer large yield losses due to the acidity problem. Puseletso has however shown excellent adaption to Lesotho conditions and has already made a significant contribution in Lesotho.
546			_aEnglish
591			_a0007|AGRIS 0101|AL-Wheat Program
593			_aJose Juan Caballero
595			_aCPC
650	1	0	_aDiuraphis noxia
650	1	0	_aGenetic resistance _92277
650	1	0	_aLesotho
650	1	0	_aPest control
650	1	0	_aPests of plants _91201
653	0		_aCIMMYT
650	1	7	_aGenetic resources _gAGROVOC _2 _91127
650	1	0	_91296 _aTriticum aestivum _gAGROVOC
700	1		_aPurchase, J.L., _ecoaut.
942			_cPRO
999			_c4519 _d4519