Transgressive segregation for frost resistance in hexaploid oats (Avena spp.)

Jenkins, G.

doi:10.1017/s0021859600020104

Cited by 11 publications

(3 citation statements)

References 14 publications

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“…Winter hardiness of Populations 7 and 9 showed good SCA and selection from Population 9 may produce lines with desired agronomic characters such as early flowering and large seed size (Table 1). Similar results indicating the importance of GCA and SCA were reported in pea (Auld et al, 1983), oat ( Avena sativa L., Jenkins, 1969; Muehlbauer et al, 1970), and wheat (Brule‐Babel and Fowler, 1988; Sutka, 1984).…”

Section: Discussionsupporting

confidence: 78%

Genetics of Winter Hardiness in 10 Lentil Recombinant Inbred Line Populations

Kahraman

Küsmenoğlu²,

Aydin

et al. 2004

Crop Science

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Available winter hardy lentil (Lens culinaris Medik.) germplasm has prompted interest in the development and use of cultivars that can be fall planted in cold highland areas. This change in production of lentil from normally spring sown to fall sown is environmentally sound and increases yield potential. Understanding the mode of inheritance of winter hardiness in lentil would assist breeding efforts. The objectives of this study were to determine the inheritance and heritability of winter hardiness in lentil. Ten F6 derived recombinant inbred line (RIL) populations from crosses of winter hardy germplasm lines with nonhardy germplasm were planted in a randomized complete block design with three replications at Haymana, and Sivas, Turkey, and at Pullman, WA, USA, between 1997 and 2001. Meaningful data for an analysis of the inheritance of winter hardiness were available only at Haymana in 1997‐1998 and at Pullman in 1998‐1999, indicating infrequent occurrences of sufficiently cold winters to provide differential killing. Percent survival was calculated on the basis of plant stand counts recorded after establishment in the fall and regrowth in the spring. Parental line WA8649041 was the most winter hardy followed by WA8649090, ILL‐1878, and ILL‐669. General combining ability (GCA) and specific combining ability (SCA) effects were significant at both locations. Heritability estimates among the 10 RIL populations ranged from 15.9 to 90.7%. Inheritance patterns of winterhardiness appeared to be quantitative on the basis of frequency distributions and the lack of discrete segregation classes. Since winter hardiness in lentil appears to be a quantitative trait, accumulation of genes responsible for winter survival will probably require stringent field testing or marker assisted selection.

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Section: Discussionsupporting

confidence: 78%

Genetics of Winter Hardiness in 10 Lentil Recombinant Inbred Line Populations

Kahraman

Küsmenoğlu²,

Aydin

et al. 2004

Crop Science

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“…Earlier methods of assessing frost resis-is entirely restricted to the coleoptile stage of tance at the Plant Breeding Institute have been seedlings hardened in the dark. Earlier work at described previously (Bingham & Jenkins, 1965; this Institute and elsewhere (Dantuma, 1958;Jenkins, 1969). In these, freezing damage was Dantuma & Andrews, 1960) has produced rather assessed either by plant survival counts or by poor correlations between the results of coleoptile visual scores of leaf damage.…”

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confidence: 94%

A method of estimating the cold hardiness of cereals by measuring electrical conductance after freezing

Jenkins

Roffey

1974

J. Agric. Sci.

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A technique is described in which cereal seedlings after germination and hardening under controlled conditions in a growth chamber were subjected to freezing in tubes immersed in a solution of ethylene glycol. Susceptibility to freezing was estimated by measuring electrical conductance on the linear 0-100 scale of a standard 'Avometer' using platinum probes inserted near the base of the lamina of the first leaf. The use of the technique is illustrated by two experiments with winter barley cultivars chosen to represent a wide range of winter hardiness. Although significant cultivar differences in mean conductance existed prior to freezing, adequate differentiation was obtained by measurements after freezing only. The differentiation of these cultivars on mean conductance values after freezing was well correlated with their established winter hardiness.It is concluded that the technique is sufficiently sensitive for the preliminary screening of early generation material but that, because of significant cultivar x hardeningduration interactions, advanced breeding lines should be tested over a range of hardening and freezing regimes.

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“…At a high freezing temperature the frost resistance was dominant, while at a low temperature the frost sensitivity became dominant. Genetic control of cold hardiness was found to be mainly additive also in rye (Brule-Babel and Fowler 1989), triticale (Limin and Fowler 1991), oats (Jenkins 1969) and barley (Eunus et al 1962, Rohde andFulham 1960).…”

Section: Genetic Control Of Cold Acclimationmentioning

confidence: 99%

Resistance of winter cereals to various winter stress factors - inter- and intraspecific variation and the role of cold acclimation

Hömmö

1994

AFSci

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This work was undertaken to study the inter and intraspecies variation in winterhardiness of overwintering cereal species and to find out the reasons for this variation. The studied 24 winter wheat (Triticum aestivum L.), 13 rye (Secale cereale L.), 5 triticale (X Triticosecale Wittmack) and 11 barley (Hordeum vulgäre L.) cultivars differed highly significantly from each other in winter survival ability determined in field trials during 1989-1992 at six locations in Finland and at altogether 17 locations in all the Nordic countries. The Field Survival Indexes of cultivars were determined, too. Rye was the most winter hardy species followed by winter wheat, triticale and barley. Since field trials often fail to screen the resistance of plants to specific winter stress factors, such as frost or snow mould, laboratory tests were used to study these factors. On the basis of the results it could be concluded that, during cold acclimation, sugars and proline are accumulated, and the fatty acid composition of the plasma membrane lipid fractions is changed. Cold acclimation enhances frost resistance and general winterhardiness of overwintering cereals, but part of the snow mould (Microdochium nivale (Fries) Samuels & Hallet) resistance may be induced without low temperature treatment. Thus, different resistance mechanisms may be controlling frost and snow mould resistance. The results of this study suggest that general winterhardiness of overwintering species could be enhanced by screening separately resistance mechanisms of plants to various specific winter stress factors and combining these into new cultivars.

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Transgressive segregation for frost resistance in hexaploid oats (Avena spp.)

Cited by 11 publications

References 14 publications

Genetics of Winter Hardiness in 10 Lentil Recombinant Inbred Line Populations

Genetics of Winter Hardiness in 10 Lentil Recombinant Inbred Line Populations

A method of estimating the cold hardiness of cereals by measuring electrical conductance after freezing

Resistance of winter cereals to various winter stress factors - inter- and intraspecific variation and the role of cold acclimation

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