Effciency of Selection for Yield under Different Fertilizer Levels in Wheat Cross.

Gotoh, Kanji; Osanai, Shun-Ichi

doi:10.1270/jsbbs1951.9.173

Cited by 24 publications

(14 citation statements)

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“…Estimates of hs and has have been reported (Gotoh & Osanai, 1959 ;Frey, 1964 ;Johnson & Frey, 1967 ;McNeill & Frey, 1974 ;Allen et al, 1978 ;Rumbaugh et al ., 1984), but few estimates of rG exist in the plant breeding literature . The magnitude of rG is inversely related to genotype x environment interaction (with 'environment' meaning `stress level' in this report) and can, under restricted conditions, be calculated as :…”

Section: Introductionmentioning

confidence: 99%

Predicting the relative effectiveness of direct versus indirect selection for oat yield in three types of stress environments

Atlin

Frey

1989

Euphytica

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In breeding crop varieties for stress environments, it must be decided whether to select directly, in the presence of stress, or indirectly, in a nonstress environment . The relative effectiveness of these two strategies depends upon the genetic correlation (r G) between yield in stress and nonstress environments and upon heritability in each . These parameters were estimated for grain yield of 116 random oat lines grown in nonstress, P-deficient, N-deficient, and late-planted environments . Estimates of r G between yield in nonstress and yield in P-deficient, N-deficient, and late-planted environments were 0 .52 ± 0.24, 1 .08 ± 0.16, and 0 .06 ± 0.24, respectively . No consistent relationship between heritability and environment mean yield was observed . Direct selection in the presence of stress was predicted to be superior for yield in low-P and late-planted environments, but indirect selection in high-N environments was predicted to be as effective as direct selection in producing yield gain in low-N environments . These results confirm that neither high-yield environments nor environments in which the heritability of yield is maximized are necessarily optimum when the goal is to maximize yield gain in stress environments .

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Section: Introductionmentioning

confidence: 99%

Predicting the relative effectiveness of direct versus indirect selection for oat yield in three types of stress environments

Atlin

Frey

1989

Euphytica

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“…Griffing and Langridge (1963) demonstrated that high temperature reduces the growth of Arabidopsis thaliana. In the investigation of other species the reduction of heritabilityestimates by stress conditions (moisture stress and low quality of soil) has also been demonstrated for grain yield in oats (Frey, 1964) and in wheat (Gotoh and Osanai, 1959). Frey interpreted his findings by stating that more rapid progress could be expected from selection under " non-stress " conditions.…”

Section: Discussionmentioning

confidence: 99%

The effect of environment on heritability and predicted selection response in Medicago sativa

et al. 1973

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SUMMARYThis investigation concerns the effect of environments on mean plant growth, heritability, and predicted selection-response of metric characters in M. sativa at three locations.The three natural environment " treatments" (high, medium and low) were determined by the differing degrees of daylight, temperature and moisture available. It is noted that this climatic variation took place within the geographical locations as well.Mean plant height was significantly lower in the medium and low environments than in the high environment, The heritability estimates (/i) of plant growth varied between 016 and O46 under high and medium treatments at the three locations, but it was reduced to zero by the low treatment.

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“…Gotoh and Osanai (1959a-) divided the bulk of a wheat cross into three lots and grew one at each of three population levels. Selection was practiced for high spike number at each population level for four generations, F^ to Fg.…”

Section: Review Of Literaturementioning

confidence: 99%

“…However, Osanai (1959a and1959b) concluded that low fertility and low density were the most efficient environments for selecting among wheat genotypes for grain yield. Prey (1964) and Krull, et al (1966), however, concluded that greater progress for yielding ability of small grains was expected if testing was done under high productivity conditions.…”

Section: Among the Five Attributes Measured In Ten Experimentsmentioning

confidence: 99%

Optimum environment for maximizing genetic gain from selection

Cardenas

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Effciency of Selection for Yield under Different Fertilizer Levels in Wheat Cross.

Cited by 24 publications

References 1 publication

Predicting the relative effectiveness of direct versus indirect selection for oat yield in three types of stress environments

Predicting the relative effectiveness of direct versus indirect selection for oat yield in three types of stress environments

The effect of environment on heritability and predicted selection response in Medicago sativa

Optimum environment for maximizing genetic gain from selection

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