Genetic variation and adaptation of 76 Canadian barley cultivars

Kong, Dongyan; Choo, T. M.; Narasimhalu, P.; Jui, P. Y.; Ferguson, T.; Therrien, M. C.; Ho, K. M.; May, K. W.

doi:10.4141/cjps94-132

Cited by 13 publications

(20 citation statements)

References 2 publications

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“…Information is also lacking on the effect of morphological traits, such as spike type (tworow versus six-row) and kernel type (covered versus hulless grain), on straw yield and composition. This experiment was part of a national study to determine genetic variation of agronomic traits and chemical composition in Canadian barley cultivars (Kong et al 1994. The objectives of this experiment were: 1) to determine variation for yield and chemical quality of straw among 75 Canadian barley cultivars, and 2) to measure the effects of geographical origin (eastern versus western Canada), spike type, and for western Canadian cultivars only, the effect of kernel type on straw yield and straw dry matter (DM) composition.…”

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confidence: 99%

Straw yields and nutrients of seventy-five Canadian barley cultivars

Narasimhalu¹,

Kong²,

Choo³

1998

Can. J. Anim. Sci.

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, T. M. 1998. Straw yields and nutrients of seventy-five Canadian barley cultivars. Can. J. Anim. Sci. 78: 127-134. Straw, grain, and total yields were compared among 32 two-row and 43 six-row barley (Hordeum vulgare L.) cultivars registered in eastern and western Canada, that were grown at Charlottetown, Prince Edward Island in 1991 and 1992. Straw nutrients was determined in 1991. Two-row cultivars yielded more straw and less grain than six-row cultivars (P < 0.05). The total yield (i.e., total aboveground dry matter) of two-row cultivars was approximately equal to that of six-row cultivars. Straw of two-row cultivars contained more cell contents but less hemicellulose, total-N, Ca, Na, Mn, and Zn than six-row cultivars straw (P < 0.05). Straw yields were not different between eastern and western cultivars regardless of whether they were two-row or sixrow types. Eastern two-row cultivars showed higher grain yield and higher total yield than western two-row, and their straws contained less lignin and P than those of western cultivars. Straw of eastern six-row cultivars contained less Ca, but more Na and Mg than that of western six-row cultivars. Hulless barleys showed less grain yield and their straw contained less cellulose than covered barleys regardless of whether they were two-row or six-row types. Two-row hulless cultivars yielded more straw than two-row covered barleys. Straw of six-row hulless barleys contained more cell contents, total-N, and minerals (except for Na and Mn) than that of six-row covered barleys.

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confidence: 99%

Straw yields and nutrients of seventy-five Canadian barley cultivars

Narasimhalu¹,

Kong²,

Choo³

1998

Can. J. Anim. Sci.

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“…The sixrow cultivar Winchester was not included in this study because its identity in the 1991 tests was not certain (Kong et al 1994). Kernel colour was measured by an Instrumar Colormet Spectrocolorimeter (Instrumar Engineering Limited, St. John's, Newfoundland) connected to a personal computer that contained Instrumar's data collection software.…”

Section: Colour Measurementmentioning

confidence: 99%

“…Detailed testing procedures were reported in a previous paper (Kong et al 1994). Major foliar diseases under natural conditions were rated at Charlottetown in a scale ranging from 0 to 9, with 0 being no disease symptoms and 9 being severe disease symptoms.…”

Section: Plant Materials and Testing Proceduresmentioning

confidence: 99%

“…Data were analyzed as a split plot experiment at three locations in 2 yr as reported previously (Kong et al 1994). Briefly, the cultivars sum of squares (excluding hulless cultivars) was partitioned into three components: (eastern versus western), within eastern, and within western to determine if eastern barleys were different in kernel colour from western barleys.…”

Section: Statistical Analysesmentioning

confidence: 99%

“…Cultivars developed for different areas often show differences in resistance to microorganisms and thus differences in kernel discolouration (Miles et al 1987). In Canada, different types of barley have been developed as well as specific cultivars for various regions (Kong et al 1994Narasimhalu et al 1995). The regions show marked variability in environmental conditions.…”

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confidence: 99%

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Kernel colour varies with cultivars and environments in barley

Edney¹,

Choo²,

Kong³

et al. 1998

Can. J. Plant Sci.

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. 1998. Kernel colour varies with cultivars and environments in barley. Can. J. Plant Sci: 78: 217-222. Kernel colour is an important marketing trait for both malting and feed barleys. Therefore a study was initiated to investigate the kernel colour of 75 Canadian barley (Hordeum vulgare L.) cultivars at three locations (Charlottetown, Ottawa and Bentley) across Canada in 1991 and 1992. Kernel colour was measured by an Instrumar Colormet Spectrocolorimeter. Kernel colour was found to be brighter at the two locations in eastern Canada (Charlottetown and Ottawa) than at the location in western Canada (Bentley). Two-row cultivars on average were more discoloured than six-row cultivars; eastern two-row were more discoloured than western two-row. Covered barleys were less discoloured than hulless barleys in five of the six environments, but covered barleys at Bentley in 1992 were more discoloured than hulless barleys. Kernel discolouration appeared to be associated with susceptibility to net blotch for six-row cultivars. More studies are needed on kernel discolouration of barley.

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The Effect of Seeding Rate and Nitrogen Fertilization on Barley Yield and Yield Components in a Cool Maritime Climate

Spaner

Todd

McKenzie

2001

J Agronomy Crop Science

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Soil and climatic conditions in Newfoundland are on the margins of agricultural capability, and almost all feed grain is imported. The overall objective of this work was to develop guidelines for the production of barley in Newfoundland, with the goal of establishing modern cropping recommendations. We conducted a 4‐year study near St. John’s to examine the effect of seeding rate and topdress ammonium nitrate (N) fertilization rate on Chapais six‐row barley (Hordeum vulgare L.) yield components and grain yield. Increasing seeding rate from 200 to 380 seeds m–2 did not alter grain yield in any year. Increasing topdress fertilization from 0 to 60 kg N ha–1 increased spike density m–2 at harvest, resulting in linear increases in grain yield in all years. Highest N rates had greatest lodging in two years. Based on our results, agronomic recommendations for eastern Newfoundland now include barley seeding rates of 250 ± 50 seeds m–2, with topdress applications up to at least 30 kg N ha–1.

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Genetic variation and adaptation of 76 Canadian barley cultivars

Cited by 13 publications

References 2 publications

Straw yields and nutrients of seventy-five Canadian barley cultivars

Straw yields and nutrients of seventy-five Canadian barley cultivars

Kernel colour varies with cultivars and environments in barley

The Effect of Seeding Rate and Nitrogen Fertilization on Barley Yield and Yield Components in a Cool Maritime Climate

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