Additive genetic variance for stem strength in field pea (Pisum sativum)

2008 ◽  
Vol 59 (1) ◽  
pp. 80 ◽  
Author(s):  
C. P. Beeck ◽  
J. Wroth ◽  
W. A. Cowling
Keyword(s):  
Pisum Sativum ◽  
Recurrent Selection ◽  
Seed Quality ◽  
Additive Genetic Variance ◽  
Genetic Effects ◽  
Field Pea ◽  
Lodging Resistance ◽  
Diverse Range ◽  
Stem Strength ◽  
Additive Genetic Effects

Weak stem strength in field pea (Pisum sativum) is a major restriction to yield, seed quality and ease of harvest. Three aspects of stem strength: load at breaking point, flexion and compressed stem thickness, showed substantial genetic variation among a diverse range of six parents including modern cultivars, landrace accessions, and interspecific progeny. Diallel analysis of parents and F1 progeny was conducted using a simple additive-dominance model, which was adequate for load and compressed stem thickness. There were significant additive genetic effects for load and compressed stem thickness with no evidence of dominance or maternal effects, and also significant additive genetic effects for flexion which was subject to more complex genetic control. Valuable alleles for these stem strength traits were present in commercial cultivars and landrace types of field pea. Efficient and practical breeding for improved stem strength will involve several recurrent selection cycles with moderate selection pressure for compressed stem thickness in early generations, followed by verification of improvements in lodging resistance in subsequent field trials. Compressed stem thickness is relatively easy to measure on individual plants in the field and is closely associated with load.

AAC Asher field pea

2020 ◽  
Author(s):  
Dengjin Bing ◽  
Don Beauchesne ◽  
Debra L. McLaren ◽  
Richard Cuthbert ◽  
Hamid Naeem
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Seed Weight ◽  
Field Pea ◽  
Mycosphaerella Pinodes ◽  
Western Canada ◽  
Erysiphe Pisi ◽  
Lodging Resistance ◽  
Pisum Sativum L ◽  
Thousand Seed Weight

AAC Asher is a semi-leafless, medium to large seeded yellow cotyledon field pea (Pisum sativum L.) variety developed at Agriculture and Agri-Food Canada, Lacombe Research and Development Centre, Lacombe, Alberta, Canada. It has high yielding potential, early to medium maturity and good lodging resistance. AAC Asher has maturity of 94 days, and one-thousand-seed weight of 257 g. AAC Asher is resistant to powdery mildew (caused by Erysiphe pisi Syd.), moderately tolerant to mycosphaerella blight (caused by Mycosphaerella pinodes) and fusarium wilt (caused by Fusarium oxysporum). AAC Asher is adapted to all field growing regions in western Canada.

CDC Sage field pea

2006 ◽  
Vol 86 (1) ◽  
pp. 161-162 ◽  
Author(s):  
Tom Warkentin ◽  
Albert Vandenberg ◽  
Sabine Banniza ◽  
Brent Barlow ◽  
Scott Ife
Keyword(s):  
Pisum Sativum ◽  
Field Pea ◽  
Yield Potential ◽  
Western Canada ◽  
Lodging Resistance ◽  
Pisum Sativum L ◽  
Green Cotyledon ◽  
Crop Development ◽  
Cultivar Description ◽  
Release Program

CDC Sage, a green cotyledon field pea (Pisum sativum L.) cultivar, was released in 2005 by the Crop Development Centre, University of Saskatchewan for distribution to select seed growers in Saskatchewan and Alberta through the Variety Release Program of the Saskatchewan Pulse Growers. CDC Sage is a semileafless type, with powdery mildew (caused by Erysiphe pisi DC.) resistance, good lodging resistance, medium-sized, round seeds, and good yield potential. CDC Sage is adapted to the field pea growing region of western Canada. Key words: Field pea, Pisum sativum L., cultivar description

Agassiz field pea

2006 ◽  
Vol 86 (4) ◽  
pp. 1167-1169 ◽  
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Al Sloan ◽  
Robert Conner ◽  
Yantai Gan ◽  
...  
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Key Words ◽  
Field Pea ◽  
Western Canada ◽  
Seed Shape ◽  
Lodging Resistance ◽  
Pisum Sativum L ◽  
Cultivar Description ◽  
Round Seed

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

Mendel field pea

2009 ◽  
Vol 89 (1) ◽  
pp. 77-79 ◽  
Author(s):  
Deng-Jin Bing ◽  
Don Beauchesne ◽  
Al Sloan ◽  
Yantai Gan ◽  
Cecil Vera ◽  
...  
Keyword(s):  
Pisum Sativum ◽  
Field Pea ◽  
Western Canada ◽  
Good Seed ◽  
Color Intensity ◽  
Seed Shape ◽  
Lodging Resistance ◽  
Pisum Sativum L ◽  
Cultivar Description ◽  
Round Seed

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

CDC Bronco field pea

2005 ◽  
Vol 85 (3) ◽  
pp. 649-650 ◽  
Author(s):  
Tom Warkentin ◽  
Albert Vandenberg ◽  
Sabine Banniza ◽  
Al Slinkard
Keyword(s):  
Pisum Sativum ◽  
Powdery Mildew Resistance ◽  
Field Pea ◽  
Western Canada ◽  
Lodging Resistance ◽  
Leaf Type ◽  
Pisum Sativum L ◽  
Crop Development ◽  
Cultivar Description ◽  
Good Yielding

CDC Bronco, a yellow cotyledon field pea (Pisum sativum L.) cultivar, was released in 2004 by the Crop Development Centre, University of Saskatchewan for distribution to Select seed growers in Saskatchewan and Alberta through the Variety Release Committee of the Saskatchewan Pulse Growers. CDC Bronco has a semileafless leaf type, good lodging resistance, powdery mildew resistance, medium-sized, round seeds, and good yielding ability. CDC Bronco is adapted to the field pea growing regions of western Canada. Key words: Feld pea, Pisum sativum L., cultivar description

CDC Centennial field pea

2007 ◽  
Vol 87 (4) ◽  
pp. 907-908 ◽  
Author(s):  
Tom Warkentin ◽  
Albert Vandenberg ◽  
Bunyamin Tar’an ◽  
Sabine Barlow ◽  
Scott Ife
Keyword(s):  
Pisum Sativum ◽  
Powdery Mildew Resistance ◽  
Field Pea ◽  
Western Canada ◽  
Lodging Resistance ◽  
Leaf Type ◽  
Pisum Sativum L ◽  
Crop Development ◽  
Cultivar Description ◽  
Good Yielding

CDC Centennial, a yellow cotyledon field pea (Pisum sativum L.) cultivar, was released in 2007 by the Crop Development Centre, University of Saskatchewan, for distribution to Select seed growers in Saskatchewan and Alberta through the Variety Release Committee of the Saskatchew an Pulse Growers. CDC Centennial has a semileafless leaf type, fair lodging resistance, powdery mildew resistance, moderately large sized, round seeds, and good yielding ability. CDC Centennial is adapted to the field pea growing regions of western Canada. Key words: Field pea, Pisum sativum L., cultivar description

scholarly journals Genetic Effects of Resistance to Spot Blotch in Selected Wheat Genotypes

2018 ◽  
Vol 6 (1) ◽  
pp. 33-38
Author(s):  
Batiseba Tembo ◽  
Julia Sibiya ◽  
Pangirayi Tongoona ◽  
Rob Melis
Keyword(s):  
Recurrent Selection ◽  
Genetic Effect ◽  
Resistance Breeding ◽  
Bipolaris Sorokiniana ◽  
Spot Blotch ◽  
Breeding Strategy ◽  
Genetic Effects ◽  
Selection Strategy ◽  
Wheat Genotypes ◽  
Additive Genetic Effects

Spot blotch disease of wheat (Triticum aestivum L.) caused by Bipolaris sorokiniana (Sacc) Shoemaker causes significant yield and quality losses in warm and humid agro-ecologies of the world. Breeding for resistance is considered to be the most economical and sustainable approach of controlling the disease. The objective of this study was to determine the genetic effect influencing inheritance of resistance to spot blotch in selected wheat genotypes using generation mean analysis to devise a resistance breeding strategy. Populations involving six generations (P1, P2, F1, F2, BCP1 and BCP2) were developed comprising two selected parental lines, i.e., Loerrie II and 19HRWSN6. Test materials were field evaluated for resistance to spot blotch during the 2014/15 cropping season in Zambia. Additive genetic effects were significant and accounted for 94.79% of the total genetic variation for spot blotch resistance in wheat. Dominance and epistatic effects were not detected. The predominance of additive genetic effects suggests that recurrent selection strategy could boost spot blotch resistance in these population to develop pure line wheat cultivars.

DS Dominator field pea

2002 ◽  
Vol 82 (4) ◽  
pp. 753-754
Author(s):  
L. Andersen ◽  
T. Warkentin ◽  
O. Philipp ◽  
A. Xue ◽  
A. Sloan
Keyword(s):  
Powdery Mildew ◽  
Pisum Sativum ◽  
Powdery Mildew Resistance ◽  
Field Pea ◽  
Lodging Resistance ◽  
Mildew Resistance ◽  
Pisum Sativum L ◽  
Green Cotyledon ◽  
Cultivar Description ◽  
Good Yielding

DS Dominator, a green cotyledon field pea (Pisum sativum L.) cultivar, was released in 2000 by Agriprogress Inc., Morden, Manitoba. DS Dominator has a semileafless leaf type, powdery mildew resistance, good lodging resistance, medium sized, round seeds, and good yielding ability. DS Dominator is adapted to the field pea-growing region of western Canada. Key words: Field pea, Pisum sativum L., cultivar description, powdery mildew resistance

scholarly journals CDC Patrick field pea

2008 ◽  
Vol 88 (6) ◽  
pp. 1095-1096
Author(s):  
Tom Warkentin ◽  
Albert Vandenberg ◽  
Bunyamin Tar’an ◽  
Sabine Banniza ◽  
Kirstin Bett ◽  
...  
Keyword(s):  
Pisum Sativum ◽  
Field Pea ◽  
Western Canada ◽  
Lodging Resistance ◽  
Round Shape ◽  
Pisum Sativum L ◽  
Green Cotyledon ◽  
Crop Development ◽  
Cultivar Description ◽  
Good Yielding

CDC Patrick, a green cotyledon field pea (Pisum sativum L.) cultivar, was released in 2008 by the Crop Development Centre, University of Saskatchewan for distribution to Select seed growers in Saskatchewan and Alberta through the Variety Release Committee of the Saskatchewan Pulse Growers. CDC Patrick has a semileafless leaf type, good lodging resistance, powdery mildew resistance, medium-sized seeds with round shape, good cotyledon bleaching resistance and good yielding ability. CDC Patrick is adapted to the field pea growing regions of western Canada. Key words: Field pea, Pisum sativum L., cultivar description

Genetic variation in stem strength in field pea (Pisum sativum L.) and its association with compressed stem thickness

2006 ◽  
Vol 57 (2) ◽  
pp. 193 ◽  
Author(s):  
C. P. Beeck ◽  
J. Wroth ◽  
W. A. Cowling
Keyword(s):  
Genetic Variation ◽  
Pisum Sativum ◽  
Ascochyta Blight ◽  
Testing Machine ◽  
Quantitative Measure ◽  
Field Pea ◽  
Stem Diameter ◽  
Breaking Point ◽  
Stem Strength ◽  
Pisum Sativum L

We assessed genetic variation in stem strength in field pea (Pisum sativum L.) using physical and biological measures in order to develop selection criteria for breeding programs. A diverse group of 6 pea genotypes was subjected to 2 levels of disease (ascochyta leaf and stem blight), high and low. Stem samples were tested for physical stem strength (load at breaking point and flexion) using a universal testing machine. Stem diameter and compressed stem thickness were measured as biological indicators of stem strength. The genotypes varied significantly in physical and biological measures of stem strength, and in resistance to ascochyta blight. Load at breaking point was strongly associated with compressed stem thickness but only weakly associated with stem diameter. Significant variation in compressed stem thickness was present among pea genotypes, supporting this as an inexpensive, reliable, and quantitative measure for use in the field. There was no variation in stem lignin content among genotypes. Ascochyta blight resistance and stem strength, as assessed by load, flexion, or compressed stem thickness, were independent traits (the main effects of disease level and genotype × disease level interactions for load, flexion, and compressed stem thickness were non-significant). Therefore, concurrent genetic gains in both ascochyta resistance and stem strength should be possible in the same pea breeding population.

Sign in / Sign up

Export Citation Format

Share Document