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1. Nematode resistance in bananas: screening results on some new Mycosphaerella resistant banana hybrids

Author:
Quénéhervé, P.; Salmon, F.; Topart, P.; Horry, J. P.
Source:
Euphytica 2009 v.165 no.1 pp. 137-143
ISSN:
0014-2336
Subject:
germplasm; Pratylenchus coffeae; cultivars; hybrids; Musa acuminata; plant genetic resources; pest resistance; Radopholus similis; germplasm screening; bananas
Abstract:
... Banana hybrids with resistance to Yellow Sigatoka and Black Leaf Streak disease were evaluated for resistance to the burrowing nematode Radopholus similis and to the lesion nematode Pratylenchus coffeae in a growth chamber at 24-28°. Plants produced by tissue culture were acclimatised for 6 weeks prior to inoculation. Forty-five days after inoculation with nematodes, the root systems were processe ...
DOI:
10.1007/s10681-008-9774-6

2. Passion flower hybrids and their use in the ornamental plant market: perspectives for sustainable development with emphasis on Brazil

Author:
Abreu, Priscilla Patrocínio; Souza, Margarete Magalhães; Santos, Eileen Azevedo; Pires, Marcel Viana; Pires, Mônica Moura; de Almeida, Alex-Alan Furtado
Source:
Euphytica 2009 v.166 no.3 pp. 307-315
ISSN:
0014-2336
Subject:
Passiflora; ornamental plants; plant breeding; hybrids; interspecific hybridization; plant genetic resources; floriculture; ornamental value; wild relatives; commercialization; sustainable agriculture; Brazil
Abstract:
... The Passiflora L. (Passifloraceae) genus consists of about 500 species widely distributed throughout tropical and subtropical regions, commonly known as the passion flower. The passion flowers are considered ornamental plants because of the exotic beauty of their flowers and variant foliage. Since their introduction to the Old World, around 1625, seventeenth century, they have been used to decorat ...
DOI:
10.1007/s10681-008-9835-x

3. Characterization and evaluation of two genetic groups and value of intergroup hybrids of Cola nitida (Vent.) Schott and Endlicher

Author:
Sié, R. S.; N'Goran, J. A. K.; Montagnon, C.; Akaffou, D. S.; Cilas, C.; Dagou, S.; Mondeil, F.; Charles, G.; Branchard, M.
Source:
Euphytica 2009 v.167 no.1 pp. 107-112
ISSN:
0014-2336
Subject:
germplasm; heterosis; plant breeding; hybrids; Cola nitida; germplasm evaluation; vigor; isozymes; plant genetic resources; yield components; kola nuts; plant morphology
Abstract:
... The collection of Cola nitida in Côte d'Ivoire was previously classified, based on isozyme markers, into three groups named A, B and C, based on isozymic differences. In this study, morphological traits and several yield components as well as genotypic and phenotypic variabilities for vigour were investigated in groups A and B. We found that group A was characterized by a low vigour and high yield ...
DOI:
10.1007/s10681-008-9867-2

4. Novel interspecific hybridization between sweetpotato (Ipomoea batatas (L.) Lam.) and its two diploid wild relatives

Author:
Cao, Qinghe; Zhang, An; Ma, Daifu; Li, Hongmin; Li, Qiang; Li, Peng
Source:
Euphytica 2009 v.169 no.3 pp. 345-352
ISSN:
0014-2336
Subject:
sweet potatoes; phylogeny; plant fertility; pollen; roots; microsatellite repeats; hybrids; diploidy; Ipomoea batatas; interspecific hybridization; wild relatives; leaves; Ipomoea purpurea; chromosomes; plant genetic resources; meiosis; plant growth substances; tetraploidy; color; plant morphology
Abstract:
... Interspecific hybridization is an important approach to broaden the genetic base and create novel plant forms in breeding programs. However, interspecific hybridization in Ipomoea is very difficult due to the cross incompatibility. Here we report two novel interspecific F₁ hybrids between I. batatas (L.) Lam. (2n = 6x = 90) and two wild species, I. grandifolia (2n = 2x = 30) and I. purpurea (2n = ...
DOI:
10.1007/s10681-009-9967-7

5. Single seed descent as a breeding method for swedes (Brassica napus L. var. napobrassica Peterm)

Author:
Bradshaw, John E.; Titley, Martin; Wilson, Ralph N.
Source:
Euphytica 2009 v.169 no.3 pp. 387-401
ISSN:
0014-2336
Subject:
variety trials; cultivars; hybrids; vernalization; Brassica napus subsp. rapifera; plant density; dry matter accumulation; inbreeding; plant genetic resources; methodology; selfing; rutabagas; artificial selection
Abstract:
... The results are presented of two single seed descent (SSD) breeding programmes for swedes (Brassica napus L. var. napobrassica Peterm). The first programme produced cultivar Virtue and was done as part of a research programme on heterosis. It involved the production and trialling in 1991 of 95 F₆ families from a single cross made in 1985 between lines derived from cultivars Criffel and Marian. Six ...
DOI:
10.1007/s10681-009-9971-y

6. Development of unique and novel lines for early-maturing hybrids: moving GEM germplasm northward and westward

Author:
Carena, M. J.; Pollak, L.; Salhuana, W.; Denuc, M.
Source:
Euphytica 2009 v.170 no.1-2 pp. 87-97
ISSN:
0014-2336
Subject:
variety trials; spatial distribution; plant adaptation; corn oil; hybrids; starch; genotype; grain yield; germplasm; weight; cultivars; Zea mays; genetic improvement; corn; hybridization; water content; plant genetic resources; inbred lines; genetic variation; protein content; Corn Belt region
Abstract:
... Future maize (Zea mays L.) genetic gains are dependent on the incorporation of unique and useful genetic diversity to breeding programs actively improving germplasm and developing cultivars. Our ultimate goal is to increase the genetic diversity currently available in early maturing maize hybrids by developing novel lines that can be utilized competitively in the northern US Corn Belt. A long-term ...
DOI:
10.1007/s10681-009-9985-5