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“mean values of F2”

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Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Mean F2 hybrid values were generally lower than F1 hybrid values.

Taxon: HollyhockAlcea roseat0
Outcome: mean valuese0
Direction: lowere0
Comparator: F1 hybridse0

Verbatim

t0
“Hollyhock”
✓ located verbatim in the source · title, characters 21–30

e0
“The mean values of F2 hybrids were, in general, lower than F1 hybrids”
✓ located verbatim in the source · abstract, characters 190–259

Title

Genetical Studies in Hollyhock

Vishnu Swarup; S. P. S. Raghava; K. Balakrishnan Indian Journal of Genetics and Plant Breeding (The) 1973

Other claims from this paper (2)

Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

F2 generation values were lower than corresponding F1 hybrids for all studied traits.

Taxon: Maize -Teosintet0
Material: F2 generatione0
Outcome: all studied traitse0
Direction: less thane0
Comparator: F1 hybridse0

Verbatim

e0
“The F2 generation of the three crosses in the two locations and their combined were less than corresponding values of F1 hybrids for all studied traits.”
✓ located verbatim in the source · abstract, characters 1108–1260

t0
“Maize -Teosinte Hybrids”
✓ located verbatim in the source · title, characters 59–82

Title

Gene Action for Several Important Traits in Some Promising Maize -Teosinte Hybrids Using Generation Mean Analysis

H. Sakr Journal of Agricultural Chemistry and Biotechnology 2017. doi:10.21608/jacb.2017.38415

Other claims from this paper (14)

Observation Crosses differed significantly for all studied traits.
Observation Populations within crosses and each cross differed significantly.
Observation SC10 × Rayana had the highest leaf number, at 69.79.
Observation SC10 × Rayana had the highest tiller number, at 6.25.
Observation SC10 × Rayana had the highest fifth leaf area, at 643.56 cm2.
Observation SC10 × Rayana had the highest green fodder yield per plant, at 3740.0 g.
Observation SC10 × Rayana had the highest dry fodder yield per plant, at 1191.13 g.
Observation SC 122 × R had the highest crude protein, at 16.52%.
Observation SC 122 × R had the highest digestible protein, at 11.78%.
Observation SC 122 × R had the highest total digestible nutrients, at 67.25%.
Observation Backcross means tended toward the recurrent parent.
Association Most studied traits were significantly influenced by epistatic gene effects.
Association Green fodder yield per plant was positively related to all other traits.
Recommendation The authors recommend production of maize teosinte hybrids for silage substitution.

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

F2M1 plant height, spikelet fertility, and grain yield decreased versus F2 in both crosses.

Taxon: riceOryza sativat0
Treatment: 25 kR gamma-rayse1
Outcome: plant height, spikelet fertility and grain yielde0
Direction: decreasede0
Comparator: F2e0

Verbatim

e0
“The mean values of F2M1 generation decreased as compared to F2 for plant height, spikelet fertility and grain yield in both the crosses”
✓ located verbatim in the source · abstract, characters 128–263

t0
“rice”
✓ located verbatim in the source · title, characters 83–87

e1
“The F2 seeds of two rice crosses, Himalaya 1 x Phul Patas 72 and Himalaya 1 x China 988, were irradiated with 25 kR gamma-rays.”
✓ located verbatim in the source · abstract, characters 0–127

Title

Effect of gamma irradiation on variation in segregating generations of F2 seeds of rice

P. C. Katoch; J. E. Massar; P. Plaha Indian Journal of Genetics and Plant Breeding (The) 1992

Other claims from this paper (6)

Intervention effect F2M1 panicle length and 100-grain weight decreased only in Himalaya 1 × China 988.
Intervention effect F3M2 spikelet fertility and grain yield increased versus F3 in both crosses.
Observation F3M2 variance generally did not differ significantly from F3.
Observation F3M2 heritability and genetic advance were lower than F3 in Himalaya 1 × Phul Patas 72 for most traits.
Observation F3M2 heritability and genetic advance were higher than F3 in Himalaya 1 × China 988 for most traits.
Observation The authors concluded irradiation effects vary with genetic background.

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Inoculation with Fusarium species significantly lowered the mean values of all yield-related traits in wheat hybrids compared with control plants.

Taxon: wheatTriticum aestivume0
Treatment: inoculatione1
Interactor: F. culmorum, F. graminearum and F. avenaceumFusarium culmorumFusarium graminearumFusarium avenaceume2pathogen
Outcome: yield-related traitse1
Direction: lowerede1
Comparator: controle1

Verbatim

e0
“wheat F2 hybrids derived from 16 crosses between winter wheat cultivars”
✓ located verbatim in the source · abstract, characters 261–332

e1
“Contrasts between control and inoculated plants showed that inoculation lowered the mean values of all the yield-related traits significantly (in the statistical sense)”
✓ located verbatim in the source · abstract, characters 966–1134

e2
“a conidial suspension consisting of a mixture of F. culmorum, F. graminearum and F. avenaceum isolates”
✓ located verbatim in the source · abstract, characters 421–523

Title

Uni- and multivariate approaches to evaluating the susceptibility of wheat hybrids to Fusarium head blight

Maria SURMA; Tadeusz ADAMSKI; Halina WIŚNIEWSKA; et al. Czech Journal of Genetics and Plant Breeding 2016. doi:10.17221/86/2016-cjgpb

Other claims from this paper (3)

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

F2M1 panicle length and 100-grain weight decreased only in Himalaya 1 × China 988.

Taxon: riceOryza sativat0
Material: Himalaya 1 X China 988e0
Treatment: 25 kR gamma-rayse1
Outcome: panicle length and 100-grain weighte0
Direction: decreasede2
Comparator: F2e2

Verbatim

e0
“and for panicle length and 100-grain weight only in the cross Himalaya 1 X China 988”
✓ located verbatim in the source · abstract, characters 265–349

t0
“rice”
✓ located verbatim in the source · title, characters 83–87

e1
“The F2 seeds of two rice crosses, Himalaya 1 x Phul Patas 72 and Himalaya 1 x China 988, were irradiated with 25 kR gamma-rays.”
✓ located verbatim in the source · abstract, characters 0–127

e2
“The mean values of F2M1 generation decreased as compared to F2 for plant height, spikelet fertility and grain yield in both the crosses”
✓ located verbatim in the source · abstract, characters 128–263

Title

Effect of gamma irradiation on variation in segregating generations of F2 seeds of rice

P. C. Katoch; J. E. Massar; P. Plaha Indian Journal of Genetics and Plant Breeding (The) 1992

Other claims from this paper (6)

Intervention effect F2M1 plant height, spikelet fertility, and grain yield decreased versus F2 in both crosses.
Intervention effect F3M2 spikelet fertility and grain yield increased versus F3 in both crosses.
Observation F3M2 variance generally did not differ significantly from F3.
Observation F3M2 heritability and genetic advance were lower than F3 in Himalaya 1 × Phul Patas 72 for most traits.
Observation F3M2 heritability and genetic advance were higher than F3 in Himalaya 1 × China 988 for most traits.
Observation The authors concluded irradiation effects vary with genetic background.

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“mean values of F2”

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