Abstract
The key purpose of this study was used experimental statistics methods to evaluate, characterize and conserve the genetic resources of the Active Wheat Germplasm Bank (AWGB) and promote pre-breeding the Rural Development of Paraná State (IDR Paraná), Brazil. For that purpose, 209 accessions from the IDR Paraná Active Germplasm Bank and 16 cultivars in a simple lattice design (15x15) were sown in the experimental area of IDR Paraná, in Londrina, Paraná State, and data from 16 morphological and agronomic characteristics were taken. The statistics methods used were the analysis of variance (ANOVA), grouping of averages, analysis of simple linear correlation and analysis of genetic diversity with subsequent grouping by the UPGMA and Tocher methods were performed. It was verified the average efficiency of the lattice was 1.21 % with IC5 %: [99.31 ~ 103.11 %], representing little efficiency in relation to the randomized block design. Fourteen variables showed significance by the F test, indicating that at least one genotype differs from the others for each variable. By the analysis of genetic diversity, 3 groups were obtained in which the genotypes T092125 (Group C) and IA 072118 with T062113 (Group B) were in two isolated groups and the third group gathering the remaining 223 genotypes. This fact does not directly represent a narrow genetic basis for Active Germplasm Bank of IDR Paraná, due than 99 % of the variation is actually contained in agronomic variables: days to maturation (MAT) and ear (ESP), plant height (AP) and ear size (TE). Taking as a basis the grouping of means by Scott-Knott for these variables and grain weight per ear (PG / ESP), the formation of 4 for AP and ESP, 3 TE and PG / ESP groups, 2 for DC and P100G, reflecting wide diversity within each variable and in the set of these variables. The correlation analyzes showed a positive value between TE with PG / ESP and DC and a negative value between ESP and PG / ESP, both significant. Thus, the direction of crossings, to increase productivity, between genotypes of this set, must be in the direction of obtaining plants with earlier earing and with larger ears size. It can be inferred that the set of accessions evaluated has a broad genetic basis for agronomic variables. The 225 characterized accessions represent 49 % of the total accessions of wheat in the Active Wheat Germplasm Bank (AWGB) that have been regenerated and multiplied, being able to be directed to crossings focusing on pre-improvement and / or improvement to obtain new cultivars.
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Claims 13
Claim · model-written summary
The lattice design had average efficiency of 1.21% and little advantage over randomized blocks.
- Taxon
- Wheat
Triticum aestivumt0 - Outcome
- average efficiency of the latticee0
- Value
- 1.21 %e0
- Comparator
- randomized block designe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the average efficiency of the lattice was 1.21 % with IC5 %: [99.31 ~ 103.11 %], representing little efficiency in relation to the randomized block design”
t0“Wheat Crop”
Claim · model-written summary
Fourteen wheat variables differed significantly among genotypes by the F test.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- variables showed significance by the F teste0
- Value
- Fourteene0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fourteen variables showed significance by the F test, indicating that at least one genotype differs from the others for each variable.”
t0“Wheat Crop”
Claim · model-written summary
Genetic diversity analysis separated wheat genotypes into three groups, including two isolated groups.
- Taxon
- WheatTriticum aestivumt0
- Material
- T092125e0
- Outcome
- groupse0
- Value
- 3 groupse0
- Qualifier
- two isolated groupse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“3 groups were obtained in which the genotypes T092125 (Group C) and IA 072118 with T062113 (Group B) were in two isolated groups and the third group gathering the remaining 223 genotypes.”
t0“Wheat Crop”
Claim · model-written summary
Agronomic variables accounted for 99% of variation in the wheat germplasm set.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- variatione0
- Value
- 99 %e0
- Qualifier
- agronomic variables: days to maturation (MAT) and ear (ESP), plant height (AP) and ear size (TE)e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“99 % of the variation is actually contained in agronomic variables: days to maturation (MAT) and ear (ESP), plant height (AP) and ear size (TE)”
t0“Wheat Crop”
Claim · model-written summary
Scott-Knott grouping yielded four groups for AP and ESP.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- AP and ESPe0
- Value
- 4e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the formation of 4 for AP and ESP, 3 TE and PG / ESP groups, 2 for DC and P100G”
t0“Wheat Crop”
Claim · model-written summary
Scott-Knott grouping yielded three groups for TE and PG / ESP.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- TE and PG / ESPe0
- Value
- 3e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the formation of 4 for AP and ESP, 3 TE and PG / ESP groups, 2 for DC and P100G”
t0“Wheat Crop”
Claim · model-written summary
Scott-Knott grouping yielded two groups for DC and P100G.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- DC and P100Ge0
- Value
- 2e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the formation of 4 for AP and ESP, 3 TE and PG / ESP groups, 2 for DC and P100G”
t0“Wheat Crop”
Claim · model-written summary
Ear size correlated positively and significantly with grain weight per ear and DC.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- TEe0
- Outcome
- PG / ESP and DCe0
- Direction
- positivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The correlation analyzes showed a positive value between TE with PG / ESP and DC and a negative value between ESP and PG / ESP, both significant.”
t0“Wheat Crop”
Claim · model-written summary
ESP correlated negatively and significantly with grain weight per ear.
- Taxon
- WheatTriticum aestivumt0
- Organ / stage
- ESPe0
- Outcome
- PG / ESPe0
- Direction
- negativee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The correlation analyzes showed a positive value between TE with PG / ESP and DC and a negative value between ESP and PG / ESP, both significant.”
t0“Wheat Crop”
Claim · model-written summary
The authors recommend crosses toward earlier earing and larger ears to increase productivity.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- plants with earlier earing and with larger ears sizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the direction of crossings, to increase productivity, between genotypes of this set, must be in the direction of obtaining plants with earlier earing and with larger ears size.”
t0“Wheat Crop”
Claim · model-written summary
The evaluated wheat accessions were inferred to have a broad genetic basis for agronomic variables.
- Taxon
- WheatTriticum aestivumt0
- Outcome
- broad genetic basis for agronomic variablese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the set of accessions evaluated has a broad genetic basis for agronomic variables”
t0“Wheat Crop”
Claim · model-written summary
The 225 characterized accessions represented 49% of wheat germplasm bank accessions.
- Taxon
- wheatTriticum aestivume0
- Outcome
- characterized accessionse0
- Value
- 49 %e0
- Qualifier
- 225 characterized accessionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 225 characterized accessions represent 49 % of the total accessions of wheat in the Active Wheat Germplasm Bank (AWGB)”
Claim · model-written summary
The authors propose the characterized accessions for crossing to develop new cultivars.
- Taxon
- wheatTriticum aestivume1
- Outcome
- crossings focusing on pre-improvement and / or improvement to obtain new cultivarse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“being able to be directed to crossings focusing on pre-improvement and / or improvement to obtain new cultivars.”
e1“accessions of wheat in the Active Wheat Germplasm Bank (AWGB)”