INTER‐POPULATIONAL DIFFERENTIATION AND ADAPTATION IN THE PERENNIAL, DIPLOID SPECIES <i>FRAGARIA VESCA</i> L.

Hancock, James F.; Bringhurst, R. S.

doi:10.1002/j.1537-2197.1978.tb06139.x

Cited by 22 publications

(6 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reduced R:S has been related to reduced drought tolerance in cowpea (Vigna unguiculata) (Matsui and Singh 2003) and marigold (Tagetes patula) (Borch et al 2003). Sub-species of F. vesca have demonstrated variable response in R:S ratio to temperature (Hancock and Bringhurst 1978), which was also observed in the current study. The R:S of SO 8183 decreased ((31%) in the high compared with the low temperature treatments.…”

Section: Discussionsupporting

confidence: 86%

“…The ability to efficiently photosynthesize and accumulate dry matter under temperature extremes can differ between species from thermally contrasting habitats (Barry and Bjo¨rkman 1980;Hancock and Bringhurst 1978;Serce et al 2002) as was observed in the current study. For example, F. moschata is native to cooler regions of Europe, and had lower NCER, g s and PDW in the high compared with the low temperature treatment.…”

Section: Discussionsupporting

confidence: 58%

“…In one study in California, F. vesca populations were found in high to low light levels, a range of moisture conditions (410Á2060 mm annual rainfall) and various temperature patterns of 5 to 118C in January, 6 to 138C in April and 14 to 228C in July (Hancock and Bringhurst 1978) and were considered heat and drought tolerant (Darrow 1966;Hancock and Bringhurst 1978). Optimum temperature for photosynthesis in F. vesca shifts in the direction of the prevailing growth temperature (Chabot and Chabot 1977) indicating an ability to adapt to such growing conditions.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Temperature affects dry matter production and net carbon exchange rate of lower-ploidy Fragaria species and species hybrids

Harbut¹,

Sullivan²,

Proctor³

2010

Can. J. Plant Sci.

View full text Add to dashboard Cite

. 2010. Temperature affects dry matter production and net carbon exchange rate of lower-ploidy Fragaria species and species hybrids. Can. J. Plant Sci. 90: 885Á892. Wild species can contribute to a breeding program through their wide adaptability to a range of habitats. In interspecific crosses it is not known how these species may interact in the hybrids. The dry matter production and net carbon exchange rates (NCER) of four lower-ploidy Fragaria species, four species hybrids (synthetic octoploids, SOs) and two cultivars (Allstar and Jewel) were compared under three day/night temperature regimes, low (158C/108C), medium (238C/188C) and high (308C/258C) in growth cabinets. Light intensity was maintained at 425 mmol m (2 s (1 and day length at 14 h. The wild Fragaria species had the highest NCERs across all temperature regimes. High temperatures had a depressing effect on plant dry weight for most genotypes. However, F. nubicola and SO 8245 produced 15 and 33%, respectively, higher plant dry weight at the high temperature compared with the low temperature treatment. Net carbon exchange rates for most species and synthetic octoploids were not significantly affected by high temperature. However, SO 8212 did not survive the high temperature treatment. The lower ploidy Fragaria species can be used to create synthetic octoploids that can maintain net carbon exchange rates and produce plant dry weights that are comparable with those of Fragaria cultivars. The ecological background of the species did not have a negative impact on the plant dry weight and NCER of the synthetic octoploids. Some of the SOs may be sources for improvement of Fragaria cultivars for dry matter production at higher temperatures. Une tempe´rature e´leve´e re´duit le poids sec de la plante pour la plupart des ge´notypes, cependant, F. nubicola et SO 8245 produisent respectivement 15% et 33% plus de matie`re se`che a`haute qu'a`basse tempe´rature. Les tempe´ratures e´leve´es n'affectent pas le taux d'e´change net de carbone de la majorite´des espe`ces et des octoploı¨des synthe´tiques. Toutefois, SO 8212 n'a pas surve´cu au re´gime de haute tempe´rature. Les espe`ces de Fragaria a`plus faible ploı¨die peuvent servir a`cre´er des octoploı¨des synthe´tiques au taux d'e´change net de carbone stable, capables de donner un poids sec similaire a`celui des cultivars de Fragaria. Le cadre e´cologique ou`pousse l'espe`ce n'a aucune incidence ne´gative sur le poids sec de la plante ni sur le TENC des octoploı¨des synthe´tiques. Une partie des OS pourrait servir a`ame´liorer les cultivars de Fragaria en ce qui concerne la production de matie`re se`che aux tempe´ratures plus e´leve´es. Abbreviations: NCER, net carbon exchange rates; PDW, plant dry weight; RDW, root dry weight; R:S, root:shoot ratio; SLW, specific leaf weight; SO, synthetic octoploidCan.

show abstract

Section: Discussionsupporting

confidence: 86%

Section: Discussionsupporting

confidence: 58%

mentioning

confidence: 99%

See 1 more Smart Citation

Temperature affects dry matter production and net carbon exchange rate of lower-ploidy Fragaria species and species hybrids

Harbut¹,

Sullivan²,

Proctor³

2010

Can. J. Plant Sci.

View full text Add to dashboard Cite

show abstract

“…Because such dune habitats are associated with slopes, Hancock and Bringhurst (1978) have reported that when those slopes face northwest, leaves become broader and thinner in order to more effectively exploit the solar energy available in that shaded environment. Moreover, habitats especially in higher areas have coarse sand ratios as high as 50%, with a low capacity (i.e., 1.5 to 6.0%) for retaining soil moisture (Salisbury, 1942).…”

Section: Discussionmentioning

confidence: 98%

Morphological and genetic variations inSuaeda maritima based on habitat

et al. 2004

View full text Add to dashboard Cite

We investigated the morphological and genetic variations found in Suaeda maritima growing on sand dunes at Jogeum-naru, Muan-gun, in Korea. Our objective was to determine how plant density, biomass, and morphological characteristics were affected by habitat and environmental factors. Differences in elevation dictated that habitats for this species be divided into three positions: low, middle, and high areas. The higher the elevation, the lower the amount of available water, total nitrogen, phosphate, and organic matter. Correlations between biomass and environment were statistically significant. For example, plant density and biomass declined as elevation increased. In low areas, the lengths of aerial stems and leaves were 17.98_+0.46 and 7.83_+0.12 mm, respectively; values measured at high areas were 0.70 and 0.83 times smaller, respectively. Likewise, lengths of main roots in low areas were 8.06__. 0.21 ram; in higher areas, roots were 1.58 times longer. Leaf widths in low areas were 1.88_+0.01 ram, and 1.16 times greater at higher elevations. Values for these parameters in middle areas were intermediate between those for the other two. Nevertheless, when we used an MVSP computer program to conduct a similarity coefficient analysis, we found that the morphological variations recorded at the three elevations were not matched by differences in DNA patterns, although genetic variations were observed within individual populations.

show abstract

“…To produce fewer more functionally relevant categories, we consolidated these into eight broad land class types (as listed in SI Table 1), using the “reclassify” tool in the spatial analyst extension of ArcGIS. Designation of these classes was guided by specific knowledge of habitat requirements for F. vesca , as well as land cover types not likely to support this species (Hancock & Bringhurst, 1978; Malinikova, Kukla, Kuklova, & Balazova, 2013; Roiloa & Retuerto, 2007; Schulze et al., 2012). …”

Section: Methodsmentioning

confidence: 99%

Capturing genetic variation in crop wild relatives: An evolutionary approach

Egan

Muola

Stenberg

2018

Evolutionary Applications

View full text Add to dashboard Cite

Crop wild relatives (CWRs) offer novel genetic resources for crop improvement. To assist in the urgent need to collect and conserve CWR germplasm, we advance here the concept of an “evolutionary” approach. Central to this approach is the predictive use of spatial proxies of evolutionary processes (natural selection, gene flow and genetic drift) to locate and capture genetic variation. As a means to help validate this concept, we screened wild‐collected genotypes of woodland strawberry (Fragaria vesca) in a common garden. A quantitative genetic approach was then used to test the ability of two such proxies—mesoclimatic variation (a proxy of natural selection) and landscape isolation and geographic distance between populations (proxies of gene flow potential)—to predict spatial genetic variation in three quantitative traits (plant size, early season flower number and flower frost tolerance). Our results indicated a significant but variable effect of mesoclimatic conditions in structuring genetic variation in the wild, in addition to other undetermined regional scale processes. As a proxy of gene flow potential, landscape isolation was also a likely determinant of observed patterns—as opposed to, and regardless of, geographic distance between populations. We conclude that harnessing proxies of adaptive and nonadaptive evolutionary processes could provide a robust and valuable means to identify genetic variation in CWRs. We thus advocate wider use and development of this approach amongst researchers, breeders and practitioners, to expedite the capture and in situ conservation of genetic resources provided by crop wild relatives.

show abstract

INTER‐POPULATIONAL DIFFERENTIATION AND ADAPTATION IN THE PERENNIAL, DIPLOID SPECIES FRAGARIA VESCA L.

Cited by 22 publications

References 43 publications

Temperature affects dry matter production and net carbon exchange rate of lower-ploidy Fragaria species and species hybrids

Temperature affects dry matter production and net carbon exchange rate of lower-ploidy Fragaria species and species hybrids

Morphological and genetic variations inSuaeda maritima based on habitat

Capturing genetic variation in crop wild relatives: An evolutionary approach

Contact Info

Product

Resources

About