Abstract
Roots and shoots from seedlings of 29 coffee genotypes were studied to better characterize the entries from the Coffea germplasm bank of the Instituto Agronômico (IAC), Campinas, State of São Paulo, Brasil. The varieties were seeded in a randomized complete block design with 6 replications and 10 plants per plot. The characters evaluated were: plant (PL), shoot (SL) and root (RL) length; total plant (PDM), shoot (SDM), root (RDM) and lateral root (LRDM) dry matter. A lateral root index (LRI) and shoot root dry matter (SRDM = SDM/RDM) and length ratios; (SRL = SL/RL) were calculated. The dwarf varieties (Catuaí, Icatu-caturra, Vila Sarchi, San Ramon, Vila Lobos, São Bernardo) presented higher LRDM and lower SDM than the normal size varieties such as Mundo Novo, Bourbon Vermelho, Arábica, Amarelo de Botucatu, Glaucia, etc. The varieties Macrodiscus, Icatu-caturra, Bourbon Amarelo, Vila Lobos and C. congensis showed higher root development related to shoot. The Arábica coffee standard variety showed intermediary root and shoot development. Genotypes of high yield background were higher in SL and SDM, while the dwarf types had only lower SL than the normal ones, but higher RL and dry matters. Seedlings from genotypes of known higher field drought tolerance had lower SL and RL, but higher RDM. Significant phenotypic and genotypic correlation coefficients were obtained, such the genotypes for PL and PDM (r = 0.64; P = 0.01), SL and SDM (r = 0.40; P = 0.05), SDM and LRDM (r = 0.52; P = 0.05), RDM and LRI (r = 0.68; P = 0.01), LRI and SRDM (r = 0.85; P = 0.01) and LRI and LRDM (r = 0.84; P = 0.01). High genotypic correlations suggest that selection directed to one character will directly affect the other. Conversely, low or non-significant correlations suggest independence of association, an indication that it would be possible to select two characteristics to diverse directions. Selection could be done towards different goals to change root and shoot measures (length and dry matter) because they were genotypically independent. However, care should be taken in controlling the environmental effects, because of significant positive phenotypic correlations.
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Claims 20
Claim · model-written summary
Dwarf coffee varieties had higher lateral root dry matter than normal size varieties.
CoffeaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The dwarf varieties (Catuaí, Icatu-caturra, Vila Sarchi, San Ramon, Vila Lobos, São Bernardo) presented higher LRDM and lower SDM than the normal size varieties”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Dwarf coffee varieties had lower shoot dry matter than normal size varieties.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The dwarf varieties (Catuaí, Icatu-caturra, Vila Sarchi, San Ramon, Vila Lobos, São Bernardo) presented higher LRDM and lower SDM than the normal size varieties”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
The Macrodiscus variety showed higher root development related to shoot.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The varieties Macrodiscus, Icatu-caturra, Bourbon Amarelo, Vila Lobos and C. congensis showed higher root development related to shoot”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
The Icatu-caturra variety showed higher root development related to shoot.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The varieties Macrodiscus, Icatu-caturra, Bourbon Amarelo, Vila Lobos and C. congensis showed higher root development related to shoot”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
The Bourbon Amarelo variety showed higher root development related to shoot.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The varieties Macrodiscus, Icatu-caturra, Bourbon Amarelo, Vila Lobos and C. congensis showed higher root development related to shoot”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
The Vila Lobos variety showed higher root development related to shoot.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The varieties Macrodiscus, Icatu-caturra, Bourbon Amarelo, Vila Lobos and C. congensis showed higher root development related to shoot”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
The C. congensis variety showed higher root development related to shoot.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The varieties Macrodiscus, Icatu-caturra, Bourbon Amarelo, Vila Lobos and C. congensis showed higher root development related to shoot”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
The Arábica coffee standard variety showed intermediary root and shoot development.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The Arábica coffee standard variety showed intermediary root and shoot development”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Genotypes of high yield background had higher shoot length and shoot dry matter.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Genotypes of high yield background were higher in SL and SDM”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Dwarf coffee types had lower shoot length than normal ones.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“the dwarf types had only lower SL than the normal ones, but higher RL and dry matters”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Dwarf coffee types had higher root length and dry matter than normal ones.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“the dwarf types had only lower SL than the normal ones, but higher RL and dry matters”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Seedlings from genotypes of known higher field drought tolerance had lower shoot and root length.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Seedlings from genotypes of known higher field drought tolerance had lower SL and RL, but higher RDM”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Seedlings from genotypes of known higher field drought tolerance had higher root dry matter.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Seedlings from genotypes of known higher field drought tolerance had lower SL and RL, but higher RDM”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Phenotypic and genotypic correlation between PL and PDM was significant (r = 0.64).
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Significant phenotypic and genotypic correlation coefficients were obtained, such the genotypes for PL and PDM (r = 0.64; P = 0.01), SL and SDM (r = 0.40; P = 0.05), SDM and LRDM (r = 0.52; P = 0.05), RDM and LRI (r = 0.68; P = 0.01), LRI and SRDM (r = 0.85; P = 0.01) and LRI and LRDM (r = 0.84; P = 0.01)”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Phenotypic and genotypic correlation between SL and SDM was significant (r = 0.40).
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Significant phenotypic and genotypic correlation coefficients were obtained, such the genotypes for PL and PDM (r = 0.64; P = 0.01), SL and SDM (r = 0.40; P = 0.05), SDM and LRDM (r = 0.52; P = 0.05), RDM and LRI (r = 0.68; P = 0.01), LRI and SRDM (r = 0.85; P = 0.01) and LRI and LRDM (r = 0.84; P = 0.01)”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Phenotypic and genotypic correlation between SDM and LRDM was significant (r = 0.52).
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Significant phenotypic and genotypic correlation coefficients were obtained, such the genotypes for PL and PDM (r = 0.64; P = 0.01), SL and SDM (r = 0.40; P = 0.05), SDM and LRDM (r = 0.52; P = 0.05), RDM and LRI (r = 0.68; P = 0.01), LRI and SRDM (r = 0.85; P = 0.01) and LRI and LRDM (r = 0.84; P = 0.01)”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Phenotypic and genotypic correlation between RDM and LRI was significant (r = 0.68).
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Significant phenotypic and genotypic correlation coefficients were obtained, such the genotypes for PL and PDM (r = 0.64; P = 0.01), SL and SDM (r = 0.40; P = 0.05), SDM and LRDM (r = 0.52; P = 0.05), RDM and LRI (r = 0.68; P = 0.01), LRI and SRDM (r = 0.85; P = 0.01) and LRI and LRDM (r = 0.84; P = 0.01)”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Phenotypic and genotypic correlation between LRI and SRDM was significant (r = 0.85).
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Significant phenotypic and genotypic correlation coefficients were obtained, such the genotypes for PL and PDM (r = 0.64; P = 0.01), SL and SDM (r = 0.40; P = 0.05), SDM and LRDM (r = 0.52; P = 0.05), RDM and LRI (r = 0.68; P = 0.01), LRI and SRDM (r = 0.85; P = 0.01) and LRI and LRDM (r = 0.84; P = 0.01)”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Phenotypic and genotypic correlation between LRI and LRDM was significant (r = 0.84).
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Significant phenotypic and genotypic correlation coefficients were obtained, such the genotypes for PL and PDM (r = 0.64; P = 0.01), SL and SDM (r = 0.40; P = 0.05), SDM and LRDM (r = 0.52; P = 0.05), RDM and LRI (r = 0.68; P = 0.01), LRI and SRDM (r = 0.85; P = 0.01) and LRI and LRDM (r = 0.84; P = 0.01)”
t0“SEEDLINGS FROM Coffea GENOTYPES”
Claim · model-written summary
Selection for root and shoot measures could target different goals because these measures are genotypically independent.
- Outcome
- root and shoot measurese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Selection could be done towards different goals to change root and shoot measures (length and dry matter) because they were genotypically independent”
t0“SEEDLINGS FROM Coffea GENOTYPES”