The relationship between seed yield and associated characters in meadow fescue (<i>Festuca pratensis</i>)

Lewis, J.

doi:10.1017/s0021859600068349

Cited by 5 publications

(6 citation statements)

References 8 publications

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“…In both field experiments on sowing rate, and also in each of the three sowing date experiments, seed yields per panicle in all treatments were similar and total seed yields depended greatly on panicle production. Several authors have reported the same close relationship between total production of inflorescences and seed yield (Langer, 1980;Nordestgaard, 1974;Stählin, 1972;Lewis, 1966). Hebblethwaite & Hampton (1981) compiled data from experiments with perennial ryegrass over 10 years and concluded that there is a weak correlation between seed yield and ear numbers, but a close relationship between yield and seed numbers per area.…”

Section: Inflorescence Production In Sowing Rate Experimentsmentioning

confidence: 88%

“…The probable explanation for these conflicting findings is that yields of grass seed crops are mainly dependent on two components: the number of inflores cences per area, and floret utilization (i.e. the proportion of the florets that produc es harvestable seed) (Lewis, 1966;Griffiths, 1965). The other two yield-determin ing factors (floret number and seed weight) seldom give rise to considerable varia tions in yield.…”

Section: Inflorescence Production In Sowing Rate Experimentsmentioning

confidence: 99%

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Inflorescence production in plants and in seed crops of Poa pratensis L. and Festuca rubra L. as affected by juvenility of tillers and tiller density.

Meijer¹

1984

NJAS

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The vegetative development of seed crops of P. pratensis and red fescue and the production of inflorescences in the 1st yr may vary considerably when sown under a cover crop. Juvenile tillers were studied in pot experiments. In field experiments, low inflorescence production in late-sown P. pratensis mainly resulted from too few tillers, whereas the tillers that emerged during late autumn and winter were very fertile. In late-sown red fescue crops, low inflorescence production mainly resulted from the low fertility of late emerging tillers. In field experiments on sowing rate, density had a considerable effect on the capacity of consecutive tillers to produce inflorescences. The mortality of later appearing generations of tillers increased rapidly. Management methods to attain adequate crop development and reduce density effects are discussed. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Section: Inflorescence Production In Sowing Rate Experimentsmentioning

confidence: 88%

Section: Inflorescence Production In Sowing Rate Experimentsmentioning

confidence: 99%

Inflorescence production in plants and in seed crops of Poa pratensis L. and Festuca rubra L. as affected by juvenility of tillers and tiller density.

Meijer¹

1984

NJAS

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“…Several studies have been undertaken to determine the importance of seed yield components in grasses, e.g., Italian ryegrass (Bugge, 1981), perennial ryegrass Bugge, 1987), Kentucky bluegrass ( van Wijk, 1985), crested wheatgrass (Dewey & Lu, 1959), tall fescue (Nguyen & Sleper, 1983;Ibrahim & Frakes, 1984) and mead ow fescue (Lewis, 1966). When path analysis is applied, generally much variation in seed yield remains unexplained, e.g.…”

Section: Discussionmentioning

confidence: 99%

Genetic variation for seed yield components of Westerwold ryegrass (Lolium multiflorum var. westerwoldicum).

Elgersma¹,

Nijs²,

Eeuwijk³

1989

NJAS

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Genetic variation for seed yield components was studied in 4 diploid varieties of Westerwold ryegrass, and 19 genotypes from each variety were grown in the field in 2 clonal replicate rows (minirows). The number of inflorescences/minirow, the numbers of spikelets/inflorescence and florets and seeds/spikelet, 1000-grain weight and seed yield/minirow were determined. Floret site utilization (FSU) was calculated as (seeds/floret) x 100%. Genotypic variation and heritabilities were calculated. Correlation studies and path analyses were carried out in each variety separately. Among varieties, no significant differences occurred for seed yield. However, within varieties large genetic variation was present for both seed yield and yield components. Path analyses revealed that relationships between seed yield components differed to a great extent among varieties. FSU was the major yield component in 3 varieties, but in one variety inflorescence number was the most important yield component. There was ample scope for genetic improvement of seed yield. FSU had a very high heritability and was not correlated with any of the other seed yield components. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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“…Studies of seed production in perennial grasses have shown that fertility and number of fertile tillers are the main components determining seed yield (Griffiths 1965, Lewis 1966, Hill and Watkin 1975. The relative contribution of these components will be influenced by a number of other traits, e.g.…”

Section: Path Coefficient Analysismentioning

confidence: 99%

“…Meadow fescue is a tuft-growing perennial grass species, which has a wide range of distribution in the northern hemisphere (Hulte´n 1971). Systematic breeding of meadow fescue cultivars with improved forage yield and quality, and persistency, has been conducted since the middle of the last century (Lewis 1966, Simonsen 1975, 1977, Aastveit and Aastveit 1989, 1990, Casler and van Santen 2000, 2001. The lack of any deliberate breeding for seed productivity may be due to the thought that seed and forage production are negatively correlated (van Wijk 1980, Bugge 1987.…”

mentioning

confidence: 99%

Phenotypic and genotypic variation in seed production traits within a full‐sib family of meadow fescue

Fang

Aamlid²,

Jørgensen

et al. 2004

Plant Breeding

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Phenotypic and genotypic variation for seed yield and associated traits (heading date, plant height, number of fertile tillers, 1000-seed weight, panicle length, seed weight per panicle, fertility, flag-leaf length and flag-leaf width) were studied in a full-sib family of meadow fescue using replicated clonal trials at two locations in Norway. Genotypic variances were highly significant for all traits and genotype · location interactions were significant for heading date, number of fertile tillers and seed yield. Seed yield and other seed component traits exhibited the largest genotypic variations. Heading date showed large genotype · location interaction, probably because of the very diverse origin of the two parents of the full-sib family. Path coefficient analysis showed that panicle fertility, measured as seed weight per unit length of panicles, was by far the most important component trait contributing to seed yield, followed by the number of fertile tillers, plant height and flag-leaf width. Flag-leaf width and plant height had sizeable indirect effects on seed yield via panicle fertility. This is the first time that the importance of the size of the flag leaf for seed yield in herbage grasses has been demonstrated.

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The relationship between seed yield and associated characters in meadow fescue (Festuca pratensis)

Cited by 5 publications

References 8 publications

Inflorescence production in plants and in seed crops of Poa pratensis L. and Festuca rubra L. as affected by juvenility of tillers and tiller density.

Inflorescence production in plants and in seed crops of Poa pratensis L. and Festuca rubra L. as affected by juvenility of tillers and tiller density.

Genetic variation for seed yield components of Westerwold ryegrass (Lolium multiflorum var. westerwoldicum).

Phenotypic and genotypic variation in seed production traits within a full‐sib family of meadow fescue

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