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RISS 인기검색어
- 검색키워드
- 저자 : Fernando Irajá Félix de Carvalho (검색결과 2 건)
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Insect Resistance and Horticultural Trait Genetic Values of Potato Families
Velci Queiróz de Souza,Arione da Silva Pereira,Giovani Olegário da Silva,Fernando Irajá Félix de Carvalho,Antônio Costa de Oliveira 한국작물학회 2008 Journal of crop science and biotechnology Vol.11 No.1
This work aimed to evaluate 11 potato families for insect resistance horticultural traits. The families were derived from crosses between introduced insect resistant and adapted genotypes. A randomized complete block design, with three replications was used. The plot consisted of 25 genotypes of a family, summing up to 75 genotypes tested per family. Two susceptible cultivars were included in the experiment as controls. The genotypes were evaluated for insect resistance, tuber yield traits, tuber appearance, and tuber skin smoothness. The genetic value for the intensity of insect attack in the leaves and in the tubers was lower (higher resistance) in the 11 families than in the controls. For yield traits, there was no predominant effect among the families regarding the origin of the resistant donor species (Solanum berthaultii and/or S. chacoense). However, there was a large contribution of the C-1485-16- 87 recurrent parent in crosses with resistant genotypes for tuber yield and tuber number. In relation to tuber appearance, only the family derived form the C-1485-16-87/ND140 (S. berthaultii) cross did not differ from the controls. For tuber skin smoothness, the genetic values of the families did not significantly from each other or from the controls. This work aimed to evaluate 11 potato families for insect resistance horticultural traits. The families were derived from crosses between introduced insect resistant and adapted genotypes. A randomized complete block design, with three replications was used. The plot consisted of 25 genotypes of a family, summing up to 75 genotypes tested per family. Two susceptible cultivars were included in the experiment as controls. The genotypes were evaluated for insect resistance, tuber yield traits, tuber appearance, and tuber skin smoothness. The genetic value for the intensity of insect attack in the leaves and in the tubers was lower (higher resistance) in the 11 families than in the controls. For yield traits, there was no predominant effect among the families regarding the origin of the resistant donor species (Solanum berthaultii and/or S. chacoense). However, there was a large contribution of the C-1485-16- 87 recurrent parent in crosses with resistant genotypes for tuber yield and tuber number. In relation to tuber appearance, only the family derived form the C-1485-16-87/ND140 (S. berthaultii) cross did not differ from the controls. For tuber skin smoothness, the genetic values of the families did not significantly from each other or from the controls.
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AProposal for Aluminum Tolerance Selection in White Oat under Hydroponic Conditions
Maraisa Crestani,Antonio Costa de Oliveira,José Antonio Gonzalez da Silva,Elisane Weber Tessmann,Itamara Mezzalira,Fernando Irajá Félix de Carvalho 한국작물학회 2011 Journal of crop science and biotechnology Vol.14 No.1
White oat genotypes were subjected to Al stress in hydroponic conditions in order to verify the viability of methods based on minimum nutrient solution (MNS) in comparison to complete nutrient solution (CNS), commonly used in the characterization and selection for Al tolerance in this species. The experimental design was completely randomized blocks with three replicates composed of 10 seedlings each. Six white oat genotypes subjected to different Al levels in minimum (0, 3, 6, and 9 mg L-1) and complete (0, 10,20, and 30 mg L-1) solutions were evaluated. In this evaluation, the MNS was efficient in identifying aluminum-tolerant, white oat genotypes under hydroponics. The root growth resumption showed to be the most effective trait in the aluminum-tolerant plant selection. At concentrations equal to or higher than 3 mg Al L-1 in minimum and 10 mg Al L-1 in complete solution, severe damage caused by the toxic element on root development was verified. The white oat cultivars UFRGS 14, ALBASUL, and BARBARASUL showed aluminum tolerance in the tested conditions.
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