Browsing by Author "Vandenberg, A."
Now showing 1 - 20 of 56
Results Per Page
Sort Options
Item Adaptation of chickpea to high latitude areas with short growing seasons: biomass and seed yield responses(2008-02-28) Gan, Y.; Warkentin, T.; Zentner, R.P.; McDonald, C.L.; Vandenberg, A.This study was conducted to determine plant establishment, biomass and seed yield of chickpea under diverse environmental and crop management conditions. Four cultivars were grown on three types of seedbed using N fertilizer rates of 0, 28, 64, 84, and 112 kg N ha-1 with and without Rhizobium inoculant (GR), at six sites in Saskatchewan, Canada. On average, chickpea grown on fallow seedbed produced the highest straw biomass, 5.8 t ha-1, or 28% greater than chickpea grown on barley stubble and 13% greater than being grown on wheat stubble. Similarly, chickpea grown on fallow produced seed yield of 2.5 t ha-1, 22 and 14% greater than chickpea grown on barley and wheat stubble, respectively. The cultivar CDC-Frontier produced biomass of 7.6 t ha-1, 13% greater than CDC-Xena and 7% greater than Amit and CDC-Anna. Increasing N rates from 0 to 112 kg ha-1 without GR increased biomass production and seed yield in a linear relationship with the slopes being 0.556, 0.475, and 0.089 (t ha-1 per kg of N fertilizer) for biomass produced on barley-, wheat-, and fallow-seedbeds, respectively, and the slopes for seed yield being 0.231, 0.226, and 0.055, respectively. CDC-Frontier produced the greatest biomass and seed yield and was the most stable cultivar across the diverse growing environments, whereas CDC-Xena had the lowest productivity with highest variability. This study showed that there was large variability in primary production of chickpea biomass and seed yield in these high latitude areas, but the variability can be minimized by adopting best management practices such as optimizing seedbed conditions, selecting cultivars with high yield potentials, and use of effective N-fixing inoculants.Item Agronomic studies with Fenugreek(1992-02-20) Slinkard, A.E.; Vandenberg, A.Item Air-seeding dry beans(1991-02-21) Vandenberg, A.; Kapiniak, A.Item Ascochyta resistance in lentil (Lens culinaris Medikus)(1993-02-25) Andrahennadi, C.P.; Slinkard, A.E.; Vandenberg, A.The genetic basis of resistance to Ascochyta blight was determined for 20 lentil genotypes and six F2 populations. Plants were space planted in rows in the field with adjacent spreader rows of the susceptible check Spanish Brown. Plants were inoculated by spreading infested crop debris and mist irrigation was used to create epiphytotic conditions. The disease reaction was measured by rating leaf symptoms on a 1-9 scale and by plating random samples of seed from each F2 plant on PDA agar to estimate percent seed-borne infection. Lines PI 339283, PI 374118, ILL 5588 and PR 86-360 had high resistance levels with less than 7.5% seed-borne infection. Laird, Eston, CDC-Richlea and other lines were susceptible with seed-borne infection as high as 57%. Indianhead lentil was moderately resistant. Analysis of F2 data from the six segregating populations suggests that ILL 5588 has one dominant gene and Indianhead has one recessive gene for resistance to Ascochyta blight of lentil.Item Canning quality traits of field pea cultivars grown at various locations in Saskatchewan(1998-02-19) Arganosa, G.C.; Vandenberg, A.; Tyler, R.T.; Slinkard, A.E.Item Canning quality traits of kabuli chickpea cultivars grown at various locations in Saskatchewan(1998-02-19) Arganosa, G.C.; Vandenberg, A.; Nleya, T.; Tyler, R.T.; Slinkard, A.E.Item The chickpea crop in 1998(1998-02-19) Vandenberg, A.; Araganosa, G.; Slinkard, A.E.Item Chickpeas for Saskatchewan(1995-02-23) Slinkard, A.E.; Vandenberg, A.Item Development of a laboratory protocol for evaluating canning quality in dry bean(1997-02-20) Balasubramanian, P.; Slinkard, A.E.; Tyler, R.T.; Vandenberg, A.Results of studies on the effect of canning variables on canning quality traits were used to develop a modified laboratory protocol for evaluating canning quality of navy, black and pinto beans. Calcium concentration was inversely related to all traits, except texture and appearance. Blanching navy and pinto beans at 88°C and black beans at 70°C gave the highest percent washed drained weight (PWDWT). Thermal processing at 115.6 C for 45 minutes was essential to attain food safety and commercial sterility. The laboratory protocol resulted in lower means for quality traits than the industry protocol. The PWDWT was significantly different between protocols in pinto bean only. The laboratory protocol readily detected differences in various quality attributes among commercial seed samples within each bean class.Item Development of niche market pulse crops for Saskatchewan(1994-02-24) Slinkard, A.E.; Vandenberg, A.; Hucl, P.Item Do you eat the red ones last? Breeding new classes of coloured beans for adaptation to Saskatchewan(2003-02-18) Balasubramanian, P.; Bett, K.; Vandenberg, A.Item Drought studies in dry bean (Phaseolus vulgaris L.)(1995-02-23) Nleya, T.M.; Slinkard, A.E.; Vandenberg, A.Item Dry bean production on dryland in Saskatchewan(1992-02-20) Vandenberg, A.; Slinkard, A.E.; Whatley, N.R.Item Dry bean production: effectiveness of inoculants and N fertilizer(2000-02-22) Nleya, T.M.; McAndrew, D.; Walley, F.L.; Vandenberg, A.Dry bean (Phaseolus vulgaris) production in western Canada is steadily increasing. In 1999 production reached 200 000 acres in Manitoba and 12 000 acres in Saskatchewan. These figures are projected to increase to 270 000 acres and 22 000 acres in Manitoba and Saskatchewan respectively by the year 2000. Thus, the crop is now an important component of the pulse industry in western Canada. With this expansion, producers are raising concerns and questions about nutrient management in dry bean production. Most of the concerns are centered on use of Rhizobium inoculants and N fertilizers. Considerable effort has gone into investigating the effectiveness of Rhizobium inoculants for bean production. Some of the experiments have looked at the effect of different inoculum formulations on the nodulation and nitrogen fixation. Other studies have investigated different inoculant placement methods while others have compared Rhizobium inoculants with N fertilizer. This paper reviews findings from these experiments and suggests future research topics.Item Dry beans and chickpeas – what’s the next step?(1997-02-20) Vandenberg, A.; Slinkard, A.E.Item Dry beans in Saskatchewan(1995-02-23) Vandenberg, A.; Slinkard, A.E.; Hucl, P.J.Item The effect of air-seeding on seed damage, plant population, and yield of irrigation drybean(1990-02-22) Vandenberg, A.Dry bean seed at ambient and elevated moisture levels was passed through four different commercial air-seeders prior to sowing with standard small plot equipment. Seed damage, plant stand and yield for each treatment were compared to a control treatment. Significant changes in plant stand, yield and in percent visual seed damage were attributable to cultivar, seed moisture and seed distribution system interactions. Passing dry bean seed through air-seeding systems with impact distributors caused a significant increase in seed damage and a significant reduction in both plant stand and yield. Raising initial seed moisture content to 16-18 % reduced the damage caused by air-seeders with impact distributors.Item The effects of cultivar on nodulation, seed yield, and dinitrogen fixation of dry bean (Phaseolus vulgaris L.)(2001-02-22) Nleya, T.; Walley, F.; Vandenberg, A.Item Evaluating resistance to Mycosphaerella blight of pea(1998-02-19) Wang, T.F.; Slinkard, A.E.; Vandenberg, A.Item Evaluation of a RAPD marker linked to Ascochyta blight resistance in chickpea(2000-02-22) Chowdhury, M.A.; Warkentin, T.; Banniza, S.; Tullu, A.; Vandenberg, A.Ascochyta blight caused by Ascochyta rabiei is a devastating disease of chickpea. Development of resistant cultivars is the most efficient and cost effective control method. The present study was undertaken to determine the inheritance and to identify molecular markers linked to the resistance gene to Ascochyta blight. A F2 derived F3 family developed from a cross of P 1279-2- 1 and ICCV6-3 was inoculated with Ascochyta blight spores to classify the families in to resistant, segregating and susceptible groups. RAPD primers were screened on DNA samples of resistant and susceptible bulks. The RAPD marker, OPH-04680, was tightly linked to a gene for resistance. Three breeding lines (95470, S95425 and 92117-25D) exhibited absence of the marker, OPH-04680, indicating that the r,,l gene responsible for Ascochyta resistance could be present in these lines.
- «
- 1 (current)
- 2
- 3
- »