Effect of seed size and defoliation at three development stages on root and shoot growth of seedlings of some common pasture species

Evans, Paul N.

doi:10.1080/00288233.1973.10421121

Cited by 22 publications

(11 citation statements)

References 15 publications

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“…For example, Bean (1973) reported that 1000 seed mass is significantly positively correlated with the initial increase in ryegrass seedlings. Similar results were obtained for Italian ryegrass (Hampton, 1986), cocksfoot and cat tail (Evans, 1973). In our study, for the seeds of Italian ryegrass there is no significant correlation between the mass of 1000 seeds and germination (r = -0.041), or the seed mass and total germination (r = -0,038).…”

Section: Resultssupporting

confidence: 75%

Variability of Italian ryegrass and perennial ryegrass seed quality produced in two different regions

Stanisavljević¹,

Milenković²,

Štrbanović³

et al. 2017

J Process Energy Agric

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The paper presents the results of four seed lots produced in Serbia and Belarus in two years, and examines the influence of their quality on 1000 seed mass, germination energy and total germination. There was no impact of the region or the year on the studied seed quality parameters. There was high variability of 1000 seed mass (CV = 20.3 %) taken from different seed lots of Italian ryegrass. Lower variability was found for germination energy and total germination (CV = 9.88 % and CV = 7.98 %). Ryegrass seed lots had lower variability for 1000 seed mass (CV = 8.34 %), germination energy and total germination (CV = 4.80 % and CV = 3.70 %). In the seeds of both species there was no significant correlation dependence of seed mass regarding germination energy and total germination. Significant influence was determined in both species between germination energy and total germination (P≤0. 001 and P≤0.05).Key words: Italian ryegrass; perennial ryegrass; quality seeds. REZIME Italijanski i engleski ljulj su značajne krmne i/ili ukrasne trave. U proizvodnji stočne hrane uglavnom se koriste u smeši sa leguminozama. Seme ovih vrsta se u Srbiji koristi delom iz proizvodnje u Srbiji, delom iz proizvodnje izvan Srbije (iz uvoza). Belorusija I Ukrajna se značajni proizvođači semena trava. Ma gde se proizvodnja semena odvijala kvalitet semena je od presudnog značaja za uspešno zasnivanje travnjaka i/ili travno-leguminoznih useva. U radu su prikazani rezultati ispitivanja po četiri partije semena proizvedenog u Srbiji I Belorusiji tokom dve godine I uticaj regiona proizvodnje na masu 1000 semena, energiju klijanja I klijavost. Nije utvrđen jasan zaključak o uticaju regiona proizvodnje (Srbija i Belorusija) I godine u kojoj se odvijala proizvodnja

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Section: Resultssupporting

confidence: 75%

Variability of Italian ryegrass and perennial ryegrass seed quality produced in two different regions

Stanisavljević¹,

Milenković²,

Štrbanović³

et al. 2017

J Process Energy Agric

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“…The increased vegetative growth of both lines of sheep's burnet from using large seed was consistent with the findings for many other species, where 115 seedlings developed from large seeds often have greater leaf area, leaf number, root and leaf dry weights, root length, and root elongation rate (Black 1959;Amott 1969;Evans 1973;McKersie et al 1981;Powell 1988). It is recommended that large seed of sheep's burnet be produced by seed separation and/or an appropriate breeding programme.…”

Section: Discussionsupporting

confidence: 73%

Effect of genotype and seed size on early vegetative growth of sheep's burnet

Douglas

Gordon

Chu

et al. 1993

New Zealand Journal of Agricultural Research

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Emergence and early vegetative growth of sheep's burnet (Sanguisorba minor ssp. muricata) were investigated in a glasshouse in autumn. Lucerne (Medicago sativa cv. Rere) was included for comparison. One accession of sheep's burnet from the United States (Oregon), which is the main line available commercially in New Zealand, and another collected from plants growing at an early trial site in New Zealand (Cockayne), were evaluated. Each seed lot was divided into small « 2.0 mm), medium (2.0-2.8 mm), and large (> 2.8 mm) seed. All sheep's burnet treatments had similar final emergence (54%) which was higher than lucerne (35%). The mean proportion of sheep's burnet hypanthia ("seed") producing two seedlings was 32%. Sheep's burnet took 4 days longer than lucerne to reach 50% seedling emergence. At 45 days after sowing, leaf area, shoot height, and root length and dry weight of seedlings from large seed were up to 3, 1.5, 1.6, and 3.1 times those from small/medium seed respectively. Physical seed separation and/or ~

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“…In Warepa silt loam, to which no additional P has been added, ryegrass (Latium perenne L.) , which may respond to VAM, is much less reliant on the formation of V AM than white clover (Trifolium repens L.) (Hall unpublished data). This, according to suggestions put forward by Baylis (1975) and Hall (1973Hall ( , 1975 is due, at least in part, to the more extensive root system of ryegrass (Evans 1973). It therefore seems probable that mycorrhizal clover, with its greater absorptive area, would be better equipped than non-mycorrhizal clover to compete with rye grass for soil P.…”

Section: Introductionmentioning

confidence: 92%

Effects of endomycorrhizas on the competitive ability of white clover

Hall

1978

New Zealand Journal of Agricultural Research

104

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White clover (Trifolium repens L.) and ryegrass (Lotium perenne L.) were grown separately and together, at five soil P levels, and with or without vesicular-arbuscular mycorrhizas (V AM). At 0 kg P Iha V AM produced a 5-fold increase in total clover dry weight when grown alone and a 40-fold increase when grown with ryegrass. In the absence of tyegrasss total clover dry weights were increased by VAM at 0 and 4 kg P Iha while in the presence of ryegrass, clover P concentrations were depressed and VAM stimulated clover growth at 12 kg P Iha. By the third harvest VAM stimulated clover grown alone at 12 kg P /ha although it did not significantly stimulate total yield. The results show that V AM clover is better equipped than non-mycorrhizal clover to compete with ryegrass for soil P nnd that inter-and intra-specific competition for soil P resulted in V AM stimulating clover more and at higher soil P levels. Ryegrass displayed a pOOr response to both P and VAM, which was attributed to N deficiencv.

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Effect of seed size and defoliation at three development stages on root and shoot growth of seedlings of some common pasture species

Cited by 22 publications

References 15 publications

Variability of Italian ryegrass and perennial ryegrass seed quality produced in two different regions

Variability of Italian ryegrass and perennial ryegrass seed quality produced in two different regions

Effect of genotype and seed size on early vegetative growth of sheep's burnet

Effects of endomycorrhizas on the competitive ability of white clover

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