Research Article

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The fig (Ficus carica L.) is a fruit tree of great world importance and, therefore, the genetic improvement becomes an important field of research for better crops, being necessary to gather information on this species, mainly regarding its genetic variability so that appropriate propagation projects and management are made. The improvement programs of fig trees using ... more

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Blumea balsamifera is a commercially important medicinal herb in China and other parts of Asia. It is used to produce borneol. This plant grows in the wild, but resources have diminished greatly in recent years. We examined the genetic diversity of this species to help develop conservation strategies; 35 plants from five provinces were analyzed using AFLPs. Eight AFLP primer ... more

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AFLP; Fruit traits; genetic relationships; Molecular marker association; Olive (Olea europaea L.)

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M. Ipek; M. Seker; A. Ipek; M.K. Gul
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Capsicum annuum; Gene action; Heritability; Meloidogyne incognita; Monogenic inheritance; Resistance

Root-knot nematodes of the genus Meloidogyne are important pathogens affecting vegetable crop production in Brazil and worldwide. The pepper species Capsicum annuum includes both hot and sweet peppers; very little emphasis has been placed on breeding sweet peppers for nematode resistance. We report on the inheritance of resistance to Meloidogyne incognita ( ... more

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Lactuca sativa L.; Lettuce; Meloidogyne javanica; Nematode; Resistance

Resistance to the root-knot nematodes Meloidogyne spp. would be a valuable attribute of lettuce Lactuca sativa L. cultivars grown in tropical regions. The looseleaf lettuce ‘Grand Rapids’ is resistant to both M. incognita and M. javanica. Resistance to M. incognita has a high heritability, under the control of a single gene locus, in which the ... more

W.Roberto Maluf; S.Márcio Azevedo; L.Antonio Au Gomes; A.Cláudia B. de Oliveira
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Antibiotics; Chromobacterium violaceum; Resistance

Chromobacterium violaceum is a free-living bacterium commonly found in aquatic habitats of tropical and subtropical regions of the world. This bacterium is able to produce a large variety of products of biotechnological and pharmacological use. Although C. violaceum is considered to be non-pathogenic, some cases of severe infections in humans and other animals have been reported ... more

F. Fantinatti-Garboggini; R. de Almeida; Vdo Amaral Portillo; T.A.P. Barbosa; P.Beltramini Trevilato; C.Eduardo Ra Neto; R.Duarte Coêlho; L.Aparecida Bartoleti; E.Seixas Hanna; M. Brocchi; G.P. Manfio; D.Wanderlei Silva
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Honey bee comb; Natural comb cell size; Reproduction; Resistance; Varroa destructor

Africanized honey bees (Apis mellifera, Hymenoptera: Apidae) in Brazil are tolerant of infestations with the exotic ectoparasitic mite, Varroa destructor (Mesostigmata: Varroidae), while the European honey bees used in apiculture throughout most of the world are severely affected. Africanized honey bees are normally kept in hives with both naturally built small width ... more

G.A. Piccirillo; D. De Jong
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Analysis of DNA sequence variation among genotypes is useful for differentiation of wheat accessions, selection strategies and genetic development of crop plants. We screened molecular markers for yellow rust resistance genes (Yr7, Yr9, Yr15, Yr18, Yr26, and YrH52), which are in the gene-rich regions of wheat chromosomes 1B, 2B, and 7D ... more

E. Cabuk; Y. Aydin; A.A. Uncuoglu
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Actin; Bent DNA; Bombyx mori; Nucleopolyhedrovirus; Resistance

Previous reports demonstrated that actin is necessary for nucleocapsid transport and viral gene expression during nucleopolyhedrovirus infection of Bombyx mori. The first intron of B. mori A3 actin contains a cryptic promoter that drives expression of a rare isoform. We detected differences in the size and nucleotide composition of the first intron of the A3 actin gene ... more

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