Deng-Jin Bing

Reward field pea

Reward, a semi-leafless and powdery mildew resistant yellow cotyledon field pea (Pisum sativum L.) cultivar, has excellent lodging resistance, high yielding ability, round seed shape and medium seed size. It is adapted to field pea growing regions in western Canada. Key words: Pisum sativum L., field pea, powdery mildew resistance, cultivar description

Water use of pulse crops at various plant densities under fallow and stubble conditions in a semiarid environment

Understanding water use characteristics of crops is essential for optimizing crop productivity in semiarid environments. This study determined water use (WU), water use efficiency (WUE), and postharvest residual soil water (PHRSW) of dry pea (Pisum sativum L.) and desi and kabuli chickpea (Cicer arietinum L.) at four plant densities under fallow and stubble cropping systems in a semiarid environment. Crops were grown in southwest Saskatchewan from 1998 to 2000. Chickpea used 28% more water than dry pea, while kabuli chickpea used 14% more water than desi chickpea only when grown on fallow at one of the sites. Pulses grown on fallow used 66% more water than when grown on stubble, with largest difference (48%) in WU between the two cropping systems being in the 60- to 90-cm soil depths. Overall, dry pea had the greatest WUE (12.9 kg ha-1 mm-1), followed by desi chickpea (7.3 kg ha-1 mm-1) and kabuli chickpea (6.6 kg ha-1 mm-1). Water use efficiency increased with increasing plant density for all the pulses,...

Canstar field pea

Canstar, a yellow cotyledon field pea (Pisum sativumL.) cultivar, has a semi-leafless leaf type, medium maturity, medium-sized and round seeds, good lodging resistance and high yielding ability. Canstar is resistant to powdery mildew and is adapted to the field pea growing regions of western Canada. Key words: Pisum sativum, field pea, powdery mildew resistance, cultivar description

Agassiz field pea

Agassiz is a semi-leafless and powdery mildew resistant field pea (Pisum sativum L.) cultivar with yellow cotyledons, high seed yielding ability, good lodging resistance, round seed shape and medium seed size. It is adapted to field pea growing regions in western Canada. Key words: Field pea, Pisum sativum, cultivar description, yellow cotyledons

Yields in mixtures of resistant and susceptible field pea cultivars infested with powdery mildew - defining thresholds for a possible strategy for preserving resistance

Bing, D., Gan, Y. and Warkentin, T. 2011. Yields in mixtures of resistant and susceptible field pea cultivars infested with powdery mildew - defining thresholds for a possible strategy for preserving resistance. Can. J. Plant Sci. 91: 873-880. Powdery mildew (caused by Erysiphe pisi var. pisi DC.) resistance of field pea (Pisum sativum L.) cultivars is dominated by the single gene er1. Monoculture of the er1 gene may encourage pathogen evolution for more virulent race(s) and breakdown of the resistance. We promote the use of cultivar mixtures made up of resistant and susceptible cultivars to limit the pathogen evolution and to preserve the resistant gene in current cultivars. The objective of this study was to evaluate if such cultivar mixtures could cause significant yield losses and to identify the proper ratio of resistant and susceptible cultivars in a mixture. Three powdery mildew resistant cultivars were mixed with 0, 10, 20, or 30% of a susceptible cultivar, and gown in replicated trials at four locations over 2 yr in western Canada. The results show that severe powdery mildew infection caused yield reduction of 21-24%. The threshold of susceptible cultivars in a cultivar mixture depends on yield potential and performance of component cultivars, the severity of powdery mildew, and environments under which a cultivar mixture is grown. When disease severity was high and the resistant cultivar yielded well, 10 to 30% of the susceptible cultivar could be mixed with the resistant cultivars without significant yield reduction compared with the resistant cultivars in pure stand. The study suggests that such cultivar mixtures may be used in field pea production by providing more substrate to the pathogen so that the breakdown of resistant gene er1 may be delayed.

AAC Royce field pea

Abstract: AAC Royce is a semi-leafless, green cotyledon field pea (Pisum sativum L.) cultivar developed at Agriculture and Agri-Food Canada, Lacombe Research and Development Centre, Lacombe, in Alberta, Canada. It has a maturity of 105 d, 1000-seed weight of 254 g, and medium lodging resistance. AAC Royce is resistant to powdery mildew (caused by Erysiphe pisi Syd.) and moderately susceptible to mycosphaerella blight (caused by Mycosphaerella pinodes) and fusarium wilt (caused by Fusarium oxysporum). AAC Royce is adapted to all field pea growing regions in western Canada.

AAC Barrhead field pea

Bing, D.-J., Beauchesne, D., McLaren, D. and Vera, C. 2015. AAC Barrhead field pea. Can. J. Plant Sci. 95: 1277-1278. AAC Barrhead is a semi-leafless, yellow cotyledonary field pea (Pisum sativum L.) cultivar developed at Agriculture and Agri-Food Canada (AAFC) Lacombe Research Centre, Lacombe, Alberta, Canada. It is a high-yielding cultivar with excellent standability. AAC Barrhead is resistant to powdery mildew caused by Erysiphe pisi Syd. It has medium maturity and is adapted to all field growing regions in western Canada.

Mendel field pea

Mendel, a semi-leafless and powdery mildew resistant field pea (Pisum sativum L.) cultivar with green cotyledons, has high seed yielding ability, good lodging resistance, round seed shape and medium seed size. It has good seed bleaching resistance and high green color intensity. The cultivar is adapted to field pea growing regions in western Canada. Key words: Field pea, Pisum sativum, cultivar description

Hugo field pea

Hugo is a high-yielding field pea (Pisum sativum L.) cultivar with yellow cotyledons. It has a semi-leafless leaf type, and is powdery mildew resistant. It has round seed shape, medium seed size and high seed coat integrity. The cultivar is adapted to field pea growing regions in western Canada. Key words: Field pea, Pisum sativum, cultivar description

Argus field pea

Argus is a semi-leafless, yellow cotyledonary field pea (Pisum sativum L.) cultivar developed at Agriculture and Agri-Food Canada, Lacombe Research Centre, Lacombe, Alberta, Canada. It has excellent lodging resistance and high seed yield. Argus is resistant to powdery mildew caused by Erysiphe pisi Syd. (syn. E. polygoni DC.). Argus is adapted to all field growing regions in western Canada.Key words: Field pea, Pisum sativum L., powdery mildew resistance, cultivar description