the Symposium on Wheats for More Tropical Environments - cimmyt

80various growing conditions. with wheatas a secondary crop after rice and onirrigated as well as rainfed uplands.Initially. research wUl depend heavilyon introductions from traditional wheatgrowingcountries and. especially. fromCIMMYT. Screening wUl have as itspriority. yield capabUity and adaptation.tolerance to important pests anddiseases and good qualitycharacteristics.Special objectives toward whichattention wUl be directed ~e:• The identification and developmentof superior wheat genotypes throughextensive introduction and. later.hybridization or o<strong>the</strong>r techniques forcombining high productivity withgood quality. nutritional value andadequate environmental stresstolerance:• The determination of landpreparation practices forguaranteeing reasonable plantdensity for high yield:• The evaluation of agronomiccharacters and disease tolerance ofselected materials in differentlocations:• The determination of nutritionalvalue and quality characteristics ofselected varieties at <strong>the</strong> cerealslaboratory. Sukamandi Food CropsResearch Institute (SURIF);• The determination of consumeracceptability. according to <strong>the</strong>intended use of <strong>the</strong> wheat;• The evaluation of crop productionpractices for enhancing yield. and• The determination of proper plantingdates of wheat within multiplecropping systems.Table 2. Yield and yield components of wheat varieties grown at Kuningan,Indonesia, 1983.J!Yield 1000llrain No. grains No. spikesVariety It/ha) weight per spike per m2H1784 2.05 a 39.8 c 22 ab 347 abeV1287 2.04 a 37.5 de 21 abed 333 abeLyallpur 73 2.04 ab 39.3 cd 19 abed 340 abeUPLWl 1.92 abe 34.0 ghi 18 abed 378 aLOK1 1.80 abed 36.8 ef 18 abed 337 abeHD2009 1.73 abed 34.9 defgh 24 a 326 abeSonalika 1.72 abed 43.0 ab 16 d 343 abeLU26 1.72 abed 33.7 ghij 20 abed 326 abeSandal 1.69 abed 35.8 efg 21 abed 283 abeLakhish 1.65 abed 39.6 cd 20 abed 328 abeSA75 1.64 abed 31.5 jk 21 abed 346 abeR164 1.60 bed 36.3 ef 18 abed 335 abeUP115 1.59 cd 33.8 ghi 17 bed 320 abeSureno 1.59 cde 32.6 ijk 22 ab 303 abeHW135 1.55 cde 41.0 be 17 bed 274 beB·3 1.54 cde 32.5 ijk 22 ab 355 abeIWP72 1.53 cde 44.9 a 16 cd 295 abeUP262 1.50 cde 41.4 be 16 cd 337 abeChenab 79 1.40 d 31.2 k 21 abed 368 abK342 1.36 de 33.3 hijk 20 abed 263 cBlue Silver 1.15 e 34.8 fghi 16 cd 261 c~I Means followed by <strong>the</strong> same letter or letters are not significantly different at <strong>the</strong> 5010level