A “Paul Bunyan” Plant Breeding Enterprise with Barley<sup>1</sup>

Suneson, C. A.; Wiebe, G. A.

doi:10.2135/cropsci1962.0011183x000200040021x

Cited by 40 publications

(17 citation statements)

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“…Composite Cross XXI was synthesized by SUNESON & WIEBE (1962) using 6200 spring barleys in the USDA World Collection and 7500 male sterile plants with Coast, Manchuria, Trebi, Hannchen, CCXIV and CCXV backgrounds . About 300 kg of seed was produced on the F 1 plants .…”

Section: Methodsmentioning

confidence: 99%

Exploitable genetic variation in a composite bulk population of barley

Mak

Harvey

1982

Euphytica

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Section: Methodsmentioning

confidence: 99%

Exploitable genetic variation in a composite bulk population of barley

Mak

Harvey

1982

Euphytica

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“…PARLEVLIET & VAN OMMEREN (1975) and JOHNSON & WILCOXSON (1978a) concluded from their data that selection for partial resistance should be fairly easy. PARLEVLIET (1976~) indeed showed, that selection for partial resistance within the highly variable barley composite XXI (SUNESON & WIEBE: 1962) was very effective.…”

Section: Introductionmentioning

confidence: 99%

Level of partial resistance to leaf rust, Puccinia hordei, in West-European barley and how to select for it

et al. 1980

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“…The population B originated from the barley composite XXI, derived from several thousands of barley cultivars (Suneson & Wiebe, 1962) . This composite, reproduced without conscious selection at Wageningen for some 15 years, consisted of a highly variable mixture of more or less homozygous and predominantly six-rowed plants .…”

Section: Methodsmentioning

confidence: 99%

“…Population A was produced specifically for this experiment by intercrossing eight selected West-European two-rowed barley cultivars . The other population (B) was derived from the barley composite XXI (Suneson & Wiebe, 1962) . This extremely variable composite consisted of predominantly six-rowed barley genotypes .…”

Section: Experimental Approachmentioning

confidence: 99%

Accumulation of partial resistance in barley to barley leaf rust and powdery mildew through recurrent selection against susceptibility

Parlevliet

Ommeren

1988

Euphytica

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Two spring barley composites, one based on eight West-European two-rowed cultivars (A) and the other, the predominantly six-rowed composite XXI, based on several thousands of barley cultivars (B), formed the starting point of a recurrent selection procedure . The aim was to study how effective a repeated process of mild selection against susceptibility followed by recombination of the remaining material was in accumulating partial resistance in four host-pathogen situations .i) Only partial resistance is present and the pathogen population is defined (a given race) .ii) Partial and major gene resistance both occur and the pathogen population is defined . iii) Only partial resistance is present and the pathogen population is not defined ; a mixture of races that varies over the years . iv) Partial and major gene resistance are both present and the pathogen population is not defined .The variation in partial resistance to barley leaf rust was large in both populations . Population A carried no effective major resistance genes, population B possibly a few at low frequency . The variation in partial resistance to powdery mildew was moderate in A and possibly large in B . As far as effective major resistance genes is concerned A did not carry any, although some recombinations of defeated genes might have been partially effective, while B seemed to carry many .During the selection procedure the populations were always exposed to race 1-2-1 of barley leaf rust and to the mixture of powdery mildew races that was naturally present .The selection procedure consisted of three cycles of recurrent selection . In the initial heterogeneous populations (SO) single plant selection was applied followed by line selection the next year . In both populations 12 lines were selected that were intercrossed in all directions within the two populations . Again single plant (S3) and line selection were exercised and 12 lines selected . The 12 A-lines were intercrossed in all directions with the 12 B-lines and the recombined population again exposed to single plant (S6) and line selection (S7) . The selection in this population was done within two-rowed entries (A*) and within six-rowed entries (B*) .The selection pressure was mild . In each selection stage about 30% plants or lines most affected by barley leaf rust and some 30% plants or lines most affected by powdery mildew were removed . Among the remaining plants or lines (ca . 45%) a selection for other useful agronomic characteristics was applied .The response to selection was measured in four evaluation trials . Both single plant and line selection contributed to the progress in resistance in both populations to both pathogens . 262The gain in partial resistance to barley leaf rust was the same in the two populations . The average amount of sporulating leaf tissue in the S7 was about twenty times less than that in the SO . The best S7 lines showed a sixty fold decrease compared with the SO . Corrected for the levelling effect of interplot interference, very strong with barley leaf ru...

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A “Paul Bunyan” Plant Breeding Enterprise with Barley¹

Cited by 40 publications

References 0 publications

Exploitable genetic variation in a composite bulk population of barley

Exploitable genetic variation in a composite bulk population of barley

Level of partial resistance to leaf rust, Puccinia hordei, in West-European barley and how to select for it

Accumulation of partial resistance in barley to barley leaf rust and powdery mildew through recurrent selection against susceptibility

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A “Paul Bunyan” Plant Breeding Enterprise with Barley1

Cited by 40 publications

References 0 publications

Exploitable genetic variation in a composite bulk population of barley

Exploitable genetic variation in a composite bulk population of barley

Level of partial resistance to leaf rust, Puccinia hordei, in West-European barley and how to select for it

Accumulation of partial resistance in barley to barley leaf rust and powdery mildew through recurrent selection against susceptibility

Contact Info

Product

Resources

About

A “Paul Bunyan” Plant Breeding Enterprise with Barley¹