Genetic Variability in Forage Yield, Crude Protein Percentage, and Palatability in Reed Canarygrass, <i>Phalaris arundinacea</i> L.<sup>1</sup>

Asay, K. H.; Carlson, I. T.; Wilsie, C. P.

doi:10.2135/cropsci1968.0011183x000800050018x

Cited by 18 publications

(14 citation statements)

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“…There is considerably more information in the perennial grass literature about forage yield than seed yield, confirming that, in most of cases, the most important breeding objective is to improve the forage-yielding capacity of the crop. The estimates of broad-sense heritability for dry matter yield (48%) in the present study were generally lower than those previously reported for F. arundinacea (Burton andDeVane 1953, Hovin et al 1976), F. pratensis (Aastveit and Aastveit 1990) and P. arundinacea (Asay et al 1968;Faris 1970); however, a number of these authors had not removed the genotypeenvironment interaction variances from their estimates. In this study, the narrow-sense estimate of 33% from variance components for dry matter yield in the open-pollinated progeny test was similar to the estimates of other authors (B. inermis, McDonald et al 1952, Tan et al 1978F.…”

Section: Genetic Variation and Heritabilitycontrasting

confidence: 88%

Genetic variation, heritability and progeny testing in meadow bromegrass

Araújo

Coulman

2002

Plant Breeding

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Meadow bromegrass is a recently introduced pasture grass in western Canada. Its leafy production and rapid regrowth have made it a major grass species for pasturing beef animals in this region. Because relatively little breeding work has been done on this species, there is little information on its breeding behaviour. The main objective of this study was to estimate genetic parameters and assess breeding methodologies for meadow bromegrass. Forty half‐sib (polycross and open‐pollinated) and full‐sib (selfed) progenies were evaluated for dry matter and seed yield, fertility index, harvest index, plant height, plant spread, crude protein, neutral detergent fibre and acid detergent fibre. Genetic variation for seed yield, harvest index, and plant height was significant in the open‐pollinated and selfed tests. Genetic variation estimates for dry matter yield were negative (polycross), not significant (open‐pollinated), or significant (selfed). Estimates of genetic variation for quality traits were not significant, except for acid detergent fibre (selfed). Correlations among characters indicated that it is possible to simultaneously improve seed and forage yield. Rankings of progenies by the half‐sib tests for forage and seed yield were not altered by the use of the synthetic parental value (SVi), which includes information from selfed progeny. The polycross progeny test did not discriminate parents as well as the open‐pollinated and selfed tests; this may have been a result of non‐random pollination in the polycross. Correlation among the progeny tests, showed that open‐pollinated and selfed progeny tests agreed for all characters, except for harvest index, while correlation between polycross and selfed tests were significant for six characters but not dry matter yield, and acid and neutral detergent fibres. The most dissimilar tests were polycross and open‐pollinated, with significant correlations found only for fertility index, height, spread and neutral detergent fibre. It was concluded that there was significant variation and moderate heritability for most traits in the meadow bromegrass populations evaluated, and that the open‐pollinated progeny test is the method of choice for selecting parents for synthetics of this species.

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Section: Genetic Variation and Heritabilitycontrasting

confidence: 88%

Genetic variation, heritability and progeny testing in meadow bromegrass

Araújo

Coulman

2002

Plant Breeding

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“…As there was no positive correlation between CP and agromorphological traits, it is not possible to improve forage quality through indirect selection. However, unlike some studies in grasses reporting negative correlation between CP and forage yield (Asay et al, 1968;Tan et al, 1978;Vogel et al, 1981;Vogel et al, 1993;Berg and Hill 1983;Araghi et al, 2014), in orchardgrass the possibility of improving forage yield and quality together exists.…”

Section: General Combining Abilitymentioning

confidence: 77%

Polycross Genetic Analysis of Forage Yield and Related Traits in Dactylis glomerata

et al. 2015

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Orchardgrass (Dactylis glomerata L.) is a long‐lived perennial forage grass and one of the main perennial grasses that naturally grow in temperate pasture and rangelands in northern and western Iran. This study was conducted to increase knowledge about the genetic basis of agro‐morphological traits in orchardgrass, which may help further improvement of this species. Half‐sib families derived from a polycross of 25 parental genotypes were evaluated during 2 yr, and 11 agro‐morphological traits together with two quality traits were measured. Families were significantly different for all the traits measured. Significant differences were also observed between the 2 yr of evaluation for all the traits except for mean percent of dry matter and panicle length. Narrow‐sense heritability ranged from 0.12 (number of fertile shoot) to 0.79 (mean percent of dry matter). The estimate of narrow‐sense heritability for the most economically important trait (total dry matter yield) was relatively low (0.17 to 0.30), showing that both additive and non‐additive gene effects played a role in the genetic control of this trait. In addition to a weak phenotypic correlation, total dry matter yield had a high genetic correlation with plant height and number of fertile shoots. No significant phenotypic correlation was observed between forage yield and crude protein, though a negative genetic correlation was evident. According to the results of heritability estimations and correlation between the traits, indirect selection for dry matter yield would be possible through selection for plant height.

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“…differences in palatability among genotypes, lines, or strains have been demonstrated in Phalaris spp. (Roe & Mottershead 1962) and P. arundinacea (Asay et al 1968). Seasonal changes in palatability occur in P. aquatica and P. arundinacea (Oram et al 1985).…”

Section: Plant Characteristics Affecting Voluntary Intakementioning

confidence: 99%

Prospects for improving the nutritive value of temperate, perennial pasture grasses

Stone

1994

New Zealand Journal of Agricultural Research

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In this review, the impact of chemical, physical, and morphological characteristics of pasture grasses that affect their nutritive value either through voluntary food intake (palatability, leaf/ stem ratio, plant habit, dimensions of stems and leaves) and/or feed utilisation (cellular and cell wall constituents, anatomy and morphology, leaf and stem strength, anti-nutrients, and toxins) are summarised and the potential for improvement by selection or other means is discussed.

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Genetic Variability in Forage Yield, Crude Protein Percentage, and Palatability in Reed Canarygrass, Phalaris arundinacea L.¹

Cited by 18 publications

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Genetic variation, heritability and progeny testing in meadow bromegrass

Genetic variation, heritability and progeny testing in meadow bromegrass

Polycross Genetic Analysis of Forage Yield and Related Traits in Dactylis glomerata

Prospects for improving the nutritive value of temperate, perennial pasture grasses

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Genetic Variability in Forage Yield, Crude Protein Percentage, and Palatability in Reed Canarygrass, Phalaris arundinacea L.1

Cited by 18 publications

References 0 publications

Genetic variation, heritability and progeny testing in meadow bromegrass

Genetic variation, heritability and progeny testing in meadow bromegrass

Polycross Genetic Analysis of Forage Yield and Related Traits in Dactylis glomerata

Prospects for improving the nutritive value of temperate, perennial pasture grasses

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Genetic Variability in Forage Yield, Crude Protein Percentage, and Palatability in Reed Canarygrass, Phalaris arundinacea L.¹