The Effect of New Tiller Growth on Carbohydrates, Nitrogen and Seed Yield per Ear inLolium perenneL.

Warringa, J.W.

doi:10.1006/anbo.1996.0185

Cited by 24 publications

(17 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Somharvest (r^ = -0.09; P = 0.65). Our conclusions are in agree-aclones that showed different RAPD patterns also differed morment with those of Warringa and Kreuzer (1996). Early seed phologically (Figsl,2 and 3).…”

Section: Methodssupporting

confidence: 77%

“…A possible explanation is that a different part of the Elgersma and Sniezko (1988), Marshall and Ludlam (1989) and genome was investigated with each method. Some phenotypic Warringa (1997). In contrast to L. perenne, seed yield and net variation may also be of epigenic origin, without a genetic seed profit ofregeneratedF.rM/jA-a plants were strongly reduced, background and thereby not heritable.…”

Section: Methodsmentioning

confidence: 89%

See 1 more Smart Citation

Fertility and growth in the field of Lolium perenne and Festuca rubra plants regenerated from suspension cultured cells and protoplasts

et al. 1998

View full text Add to dashboard Cite

The effect of regeneration of Lolium perenne and Festuca rubra from embryogenic suspension cells and protoplasts on fertility and growth was evaluated. Embryogenic suspension cultures were either routinely subcultured or cryopreserved and re-established. Phenology, morphology and fertility of regenerated plants were studied for two growing seasons in a replicated field experiment. Most regenerated L. perenne and F. rubra plants showed a delay in inflorescence emergence, a reduced seed yield and differences in morphological traits when compared with seed-grown plants. For L. perenne, performance of plants regenerated from cryopreserved suspension cultures and protoplasts was similar to that of respective plants regenerated from routinely maintained suspension cultures. However, differences in performance were observed for respective regenerants in F. rubra. The phenotypic deviation observed was partly reflected in the randomly amplified polymorphic DNA (RAPD) analysis performed. However, regenerants of both species showing similar, or even superior performance to the seed-grown plants were also found. Embryogenic suspension cells and corresponding protoplasts of L. perenne and F. rubra have the potential for producing fertile, well-performing plants which can be integrated in breeding programs.Lolium perenne L. and Festuca rubra L. are two key forage and turf grasses in temperate regions throughout the world. L. perenne is probably the most important forage grass of intensive managed grassland, and F. rubra is an important species of higher altitudes and extensively managed grassland. Both species are also used to a considerable extent for sports fields, lawns and golf courses.Forage and amenity grass breeding are required to respond rapidly and precisely to changing demands and to increase efficiency and minimize costs. Biotechnology has the potential to complement and speed up conventional breeding (van Heeswijck et al. 1994, Spangenberg et al. 1995. A basic prerequisite for the use of many biotechnological approaches is the efficient regeneration of true-to-type plants from embryogenic cell suspensions or protoplasts of agronomically important germplasm. Embryogenic suspension cells can be used as targets for biolistic^"^ (Bio-Rad Laboratories, Inc.) transformation (Wang et al. 1994). They are also a unique source of totipotent protoplasts for graminaceous monocot species. Furthermore, protoplasts are valuable tools for somatic hybridization via protoplast fusion and for the recovery of transgenic plants by direct gene transfer (Kaul 1990, Potrykus 1990. Maintenance of embryogenic cell suspensions by routine subculture is timeconsuming and runs the risk of contamination and genetic changes that may lead to the loss of valuable material (Wang et al. 1994). In addition, suspension cultures lose their morphogenic potential during prolonged culture (Kasperbauer 1990, Olesen et al. 1996. To overcome some of these serious limitations, cryopreservation technology has been successfully used as a tool for the long-term ...

show abstract

Section: Methodssupporting

confidence: 77%

Section: Methodsmentioning

confidence: 89%

Fertility and growth in the field of Lolium perenne and Festuca rubra plants regenerated from suspension cultured cells and protoplasts

et al. 1998

View full text Add to dashboard Cite

show abstract

“…Irrigation treatments increased the persistence of crop utilisation for both dry matter and seed production in all grass and legume species ( figure I [20], their reduction in the following years of evaluation, in all irrigation treatments, was due to the reduction in stem density in the treatments A and B and a collapse of the plants under rainfed conditions. Moreover, the lower differences in dry matter observed in lucerne between harvests across the years of evaluation (data not shown) than those of other species, may be ascribed to the origin of the accessions which showed lower sensitivity to summer vegetative dormancy [14,15].…”

Section: Resultsmentioning

confidence: 94%

“…Moreover, the lower differences in dry matter observed in lucerne between harvests across the years of evaluation (data not shown) than those of other species, may be ascribed to the origin of the accessions which showed lower sensitivity to summer vegetative dormancy [14,15]. Thus [15], Janovszky [7] and Warringa and Kreuzer [20], it may be postulated that treatment B provides water to promote more seed production and for restoration of root-system reserves than treatment A, and finally increases sward persistence. Thus, the benefits resulting from treatment B were more apparent in the second and third year through increased fertility of inflorescences and seed weight.…”

Section: Resultsmentioning

confidence: 99%

“…[1], Janovszky [7], Warringa and Marinissen [21], Genter et al [5] and Martiniello et al [14] According to Janovszky [7] and Warringa and Marinissen [21] Khalak and Gowda [8], Janovszky [7], Warringa and Kreuzer [20] and Genter et al [5], enviromental resources (e.g. water) interfere with flowering date and harvest index (data not presented) in grass and legume species influencing photosynthesis and consequently the biological mechanisms which support persistence, dry matter and seed yield.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Influence of agronomic factors on the relationship between forage production and seed yield in perennial forage grasses and legumes in a Mediterranean environment

Martiniello

1998

Agronomie

View full text Add to dashboard Cite

Seed Weight inLolium perenneas Affected by Interactions among Seeds within the Inflorescence

Warringa¹

1998

Annals of Botany

View full text Add to dashboard Cite

The Effect of New Tiller Growth on Carbohydrates, Nitrogen and Seed Yield per Ear inLolium perenneL.

Cited by 24 publications

References 12 publications

Fertility and growth in the field of Lolium perenne and Festuca rubra plants regenerated from suspension cultured cells and protoplasts

Fertility and growth in the field of Lolium perenne and Festuca rubra plants regenerated from suspension cultured cells and protoplasts

Influence of agronomic factors on the relationship between forage production and seed yield in perennial forage grasses and legumes in a Mediterranean environment

Seed Weight inLolium perenneas Affected by Interactions among Seeds within the Inflorescence

Contact Info

Product

Resources

About