Search claims · PlantClaims

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 resultsignificant (as stated)measured

Claim · model-written summary

F1 and F2 generations differed significantly in mean values of all studied traits.

Outcome: mean values of all the traitse0
Comparator: F1 and F2 generationse0

Not reportedTaxon

Verbatim

e0
“Significant differences in mean values of all the traits were found in the F1 and F2 generations.”
✓ located verbatim in the source · abstract, characters 463–560

Title

Genetic variance of sunflower yield components - Heliantus annuus L.

Nada Hladni; Dragan Skoric; Marija Kraljevic-Balalic Genetika 2003. doi:10.2298/gensr0301001h

Other claims from this paper (7)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Mean values of F2 were generally lower than those of F1.

Taxon: Bread WheatTriticum aestivumt0
Outcome: mean values of F2e0
Direction: lowere0
Comparator: those of F1e0

Verbatim

t0
“Bread Wheat”
✓ located verbatim in the source · title, characters 75–86

e0
“The mean values of F2 were generally lower than those of F1”
✓ located verbatim in the source · abstract, characters 331–390

Title

Six-Parameter Genetic Analysis for Grain Yield and Related Traits of Three Bread Wheat Crosses

M. T. El. Shehab El Deen; M. S. Genedy; A. M. Sharshar Journal of Plant Production 2026. doi:10.21608/jpp.2026.455650.1551

Other claims from this paper (7)

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Seed weight and number of pods increased in the F2 population relative to parent mean values.

Taxon: mungbeanVigna radiatat0
Treatment: F2 populationt0
Outcome: Seed weight and the number of podse2
Direction: increasede2
Comparator: parent mean valuese2

Verbatim

t0
“F2 population of mungbean”
✓ located verbatim in the source · title, characters 58–83

e2
“Seed weight and the number of pods characters increased from parent mean values”
✓ located verbatim in the source · abstract, characters 779–858

Title

Genetic analysis and selection of short harvest period in F2 population of mungbean

S Marwiyah; SH Sutjahjo; Trikoesoemaningtyas; et al. IOP Conference Series Earth and Environmental Science 2020. doi:10.1088/1755-1315/484/1/012006

Other claims from this paper (7)

Observationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

F2 mean values were significant for all studied traits in both crosses.

Taxon: BREAD WHEATTriticum aestivumt0
Material: F2e0
Outcome: all studied traitse0

Verbatim

e0
“Significant F2 mean values were obtained for all studied traits in both two crosses”
✓ located verbatim in the source · abstract, characters 296–379

t0
“BREAD WHEAT”
✓ located verbatim in the source · title, characters 69–80

Title

ESTIMATION OF GENETIC VARIANCE FOR YIELD AND YIELD COMPONENTS IN TWO BREAD WHEAT CROSSES

Nagwa Salem, Journal of Plant Production 2006. doi:10.21608/jpp.2006.236331

Other claims from this paper (17)

Observationobservedoriginal resultmeasured

Claim · model-written summary

F2 mean protein content lay between the low-protein parent and midparent values.

Taxon: riceOryza sativat0
Material: F2 populatione0
Outcome: Meane0
Comparator: a low protein parent and mid parent valuese0

Not reportedDirection

Verbatim

e0
“Mean of F2 population was located between a low protein parent and mid parent values”
✓ located verbatim in the source · abstract, characters 537–621

t0
“rice breeding for high protein variety”
✓ located verbatim in the source · title, characters 63–101

Title

Studies on the characteristics of scented rice. IX. A trial of rice breeding for high protein variety. 1.

Eiji TSUZUKI; Yoshiaki MURAKAMI; Shojiro SHIDA Japanese Journal of Crop Science 1985. doi:10.1626/jcs.54.210

Other claims from this paper (12)

Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Mean values for most traits increased from F2 to F5 with environmental exceptions.

Taxon: durum wheatTriticum turgidum subsp. durumt0
Outcome: mean values for most traitse0
Direction: increasee0
Qualifier: some exceptions due to environmental factorse0
Comparator: F2e0

Verbatim

t0
“durum wheat”
✓ located verbatim in the source · title, characters 76–87

e0
“an increase in mean values for most traits with advanced generations from F2 to F5, with some exceptions due to environmental factors”
✓ located verbatim in the source · abstract, characters 543–676

Title

Construction of some selection procedures for improvement of grain yield in durum wheat

Ibrahim S.M. Abdel-Latif; Mohamed N.T. Abd EL-Kader; Mousa S. Salous Egyptian Journal of Agricultural Research 2023. doi:10.21608/ejar.2023.198245.1381

Other claims from this paper (10)

Associationobservedoriginal resultno effectmeasured

Claim · model-written summary

F2 values were not related to progeny means.

Taxon: black gramVigna mungot0
Material: F2 valuese0
Outcome: progeny meane0
Direction: no relationshipe0

Verbatim

e0
“there is no relationship between F2 values and its progeny mean.”
✓ located verbatim in the source · abstract, characters 660–724

t0
“Black Gram”
✓ located verbatim in the source · title, characters 80–90

Title

Parent Progeny Regression and Correlation Analysis in Segregating Population of Black Gram [Vigna mungo (L.) Hepper]

Rakesh Gandi; N. Shunmughavalli International Journal of Current Microbiology and Applied Sciences 2018. doi:10.20546/ijcmas.2018.704.106

Other claims from this paper (1)

Association All characters had nonsignificant parent-progeny regression in positive and negative directions.

Observationobservedoriginal resultmeasured

Claim · model-written summary

Mean values of plant types in F3 lines descended from each F2 class varied.

Taxon: wheatTriticum aestivumt0
Material: F3 linese3
Outcome: mean values (Type-values)e3
Qualifier: variouse3

Verbatim

t0
“in wheat”
✓ located verbatim in the source · title, characters 94–102

e3
“In 110 F3 lines descended from each class in F2 generation, various mean values (Type-values), which express the types of young plants in each line numerically, were observed”
✓ located verbatim in the source · abstract, characters 608–782

Title

Studies on the type of young plants, its inheritance and relation to several adult characters in wheat

Toyokazu Yamada; Seiji Fujiyoshi The Japanese Journal of Genetics 1951. doi:10.1266/jjg.26.185

Other claims from this paper (7)

Observationobservedoriginal resultmeasured

Claim · model-written summary

Trait means increased in F2 relative to midparent.

Taxon: tobaccoNicotiana tabacumt0
Material: F2e0
Outcome: Mean valuese0
Direction: increasede0
Comparator: midparente0

Verbatim

e0
“Mean values increased in F2 over midparent”
✓ located verbatim in the source · abstract, characters 505–547

t0
“tobacco”
✓ located verbatim in the source · title, characters 64–71

Title

Induced variability in homozygous and heterozygous genotypes of tobacco

S. Amarnath; Akhila Prasad Indian Journal of Genetics and Plant Breeding (The) 1998

Other claims from this paper (13)

Observation Homozygous material was more sensitive than heterozygous material in seed germination and seedling growth.
Intervention effect EMS at 0.5% caused complete seed mortality.
Observation Trait ranges widened in M2 populations.
Observation Most trait means fell significantly in M2 and F2 M2, except cured leaf yield.
Observation Mean leaf thickness did not differ significantly.
Observation Leaf thickness marginally decreased in F2.
Observation Leaf thickness increased in M2 and F2 M2.
Observation Nicotine content increased significantly in F1 and M2.
Observation Nicotine content decreased significantly in F2 M2.
Observation Variation increased significantly for all traits in F2 and M2.
Observation In F2 M2, variation rose significantly for leaf breadth and first grade leaf yield.
Observation Induced variation increased in the order M2, F2, F2 M2.
Observation Hybridization and mutation variation were generally not cumulative.

“mean values of F2”

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