Differences in Yield of Diploid and Tetraploid Red Clover in Lithuania

Liatukas, Žilvinas; Bukauskaitė, Jovita

doi:10.2478/v10046-012-0023-y

Cited by 8 publications

(8 citation statements)

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“…In contrast, the A. mangium autotetraploid produced half as many seeds per pod compared to diploid cytotypes [13,26]. In many crop taxa, tetraploid varieties produced fewer seeds than diploids [27][28][29][30] with variation in number of flowers per plant, lower pollen viability, or higher rates of embryo abortion in tetraploids invoked as possible causes [30]. In our study, flowering intensity of tetraploid A. hybrid was higher than that in its diploid progenitors (Table 3).…”

Section: Flowering Seed Production and The Mating System Of Allotetraploid Acacia Hybrid In Comparison With Autotetraploid A Mangiummentioning

confidence: 49%

Breeding Polyploid Varieties of Acacia: Reproductive and Early Growth Characteristics of the Allotetraploid Hybrid (Acacia mangium × A. auriculiformis) in Comparison with Diploid Progenitors

Griffin

Harwood

et al. 2021

Forests

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Diploid clones of the hybrid acacia (Acacia mangium × A. auriculiformis) are widely planted in Vietnam because of their high productivity, adaptability, and commercial wood yields. Polyploid breeding offers possibilities for further enhancing hybrid vigor and generating new high value genotypes. In a field trial, we compared three diploid hybrid clones with their respective colchicine-induced tetraploid lines. Flowering and seed production of each cytotype were observed and open pollinated seed collected for determination of outcrossing rate and ploidy, inbreeding depression and marker inheritance in the progeny. Comparisons are also made with published characteristics of autotetraploids derived from A. mangium. Compared with their corresponding diploid cytotypes, the allotetraploids flowered slightly later but more intensely; produced the same number of seeds per pod but larger seeds; and showed a greatly reduced level of outcrossing (an average of 14% compared with 87%). Inbreeding depression for height growth was less for progeny from the allotetraploid lines (17%) than for those from the original diploids (33%). 96% of seeds from the allotetraploid clones were also tetraploid, but we observed triploids at low frequency at both the seed and field progeny stages. The segregation of the molecular markers in outcrossed allotetraploid progenies demonstrated both disomic and tetrasomic inheritance, indicating that the hybrid behaves as a segmental allotetraploid. Results suggest that an open pollinated breeding strategy is a practical option for improving polyploid acacia hybrids.

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Section: Flowering Seed Production and The Mating System Of Allotetraploid Acacia Hybrid In Comparison With Autotetraploid A Mangiummentioning

confidence: 49%

Breeding Polyploid Varieties of Acacia: Reproductive and Early Growth Characteristics of the Allotetraploid Hybrid (Acacia mangium × A. auriculiformis) in Comparison with Diploid Progenitors

Griffin

Harwood

et al. 2021

Forests

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“…The respective indices in Sweden were 225 and 300 kg ha -1 (Amdahl et al, 2016 a;. Average seed yield of diploid cultivars was 110.4 kg ha -1 and that of tetraploid cultivars 94.9 kg ha -1 in the trials carried out in Lithuania in 2003-2011(Liatukas, Bukauskaite, 2012.…”

Section: Resultsmentioning

confidence: 99%

Tetraploidinių raudonųjų dobilų sėklų derlius priklausomai nuo antsėlio auginimo agrotechnikos

Bender

Tamm

2018

Zemdirbyste-Agriculture

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Please use the following format when citing the article: Bender A., Tamm S. 2018. Seed yield of tetraploid red clover as influenced by cover crop management. AbstractRed clover for seed production is generally sown under cover crops. The warming climate raises a hypothesis that six-row barley cultivars might be replaced by intermediate cultivars of two-row barley as cover crops for establishing red clover seed production stands. The cover crop spring barley (Hordeum vulgare L.) cultivar 'Maali' was sown with four different cover crop treatments: 1) seeding rate 333 viable seeds per m², fertilisation rate 60 kg ha -1 N; 2) seeding rate 500 viable seeds per m², fertilisation rate 60 kg ha -1 N; 3) seeding rate 500 viable seeds per m², fertilisation rate 90 kg ha -1 N; 4) seeding rate 333 viable seeds per m², fertilisation rate 90 kg ha -1 N. The tetraploid red clover cultivars 'Varte' (early) and 'Ilte' (late) were sown at the rates of 2, 4, 6 and 8 kg ha -1 in four replicates using a randomised complete plot design. The height and density of generative tillers of barley, the grain yield and quality, the number of red clover plants per m² were measured in the sowing year. The seed yield and quality of red clover in the first harvest year were determined. Economic calculations were based on the prices valid in 2013-2014. The nitrogen rate and seeding rate had a significant effect on elongation of generative tillers, as well as increasing plant density, grain yield and protein content. Increased seed rate of the cover crop (500 viable seeds m²) and higher fertilization rate (90 kg ha -1 N) decreased red clover seed yield to 10 %. Increasing of only the seed rate of a cover crop, resulted in up to 4 % reduction in the red clover yield. The higher nitrogen rate (90 kg ha -1 N), when barely was sown at a rate of 500 viable seeds m² and at 300 viable seeds m², resulted in up to 5 % reduction in red clover seed yield. The study showed that it is practical to establish a seed production stand of red clover using a seeding rate of 4-6 kg ha -1 . It can be concluded that two-row barley cultivars are also recommendable cover crops besides the currently used six-row barley cultivars. Economic analysis indicated that it is practical to reduce both the seeding rate of the cover crop and nitrogen rate by one third.

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“…This is based on characteristics such as high forage productivity, increased stress resistance and persistence (Hejduk and Knot, 2010). However, according to a number of studies, the tetraploid varieties did not show any significant superiority over the diploid ones by dry mass yield (Liatukas and Bukauskaitė, 2012), by resistance to powdery mildew and sclerotia (McKenna et al, 2016), as well as by forage quality (Zuk-Golaszewska et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Comparative evaluation of diploid and tetraploid red clover accessions in a flat area of Northern Bulgaria

Naydenova¹,

Vasileva²

2019

JCEA

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From the first to third growing season in the field test carried out at the Experimental Station of Soybean (Pavlikeni, Bulgaria) was observed 12 genotypes of red clover, including two Bulgarian diploid varieties Nika 11 (standard) and Sofia 52, four local diploid populations and next six foreign tetraploid varieties, i.e. Kvarta, Astur, Carbo, Elanus, Fregata and Larus. The goal of study was to determine the effect of ploidity level of the varieties as well as the effect of adaptive variability of local populations on fresh mass yield, dry mass yields and their persistence in an agro-ecological area with lower summer moisture assurance for red clover. The highest total dry mass yield was observed for varieties Sofia 52 (2n), Nika 11 (2n), Kvarta (4n) and Astur (4n). The productivity of tetraploids Kvarta and Astur strongly varies depending on the season and the year, as well as the age of sward. According to the obtained comparative production data for cuts and years, the tetraploid germplasm has a stronger adaptation to the limiting moisture. In summer drought, typical for the plains of Northern Bulgaria, tetraploids stop growing and do not compensate for their limited vegetative growth, despite the excellent moisture guarantee in the late summer, as well as in the spring the next growing season. Local wild-type germplasm of the species is characterized by a rapid development and lower yield of fresh and dry forage mass compared to the diploid standard when growing in conditions of optimum moisture but relatively high productivity in the dry conditions of the summer months. The differences in the genotypic productivity response under dry conditions reported in this experiment also suggest that the abiotic limit studied can be successfully responded by the genotype factor.

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Differences in Yield of Diploid and Tetraploid Red Clover in Lithuania

Cited by 8 publications

References 10 publications

Breeding Polyploid Varieties of Acacia: Reproductive and Early Growth Characteristics of the Allotetraploid Hybrid (Acacia mangium × A. auriculiformis) in Comparison with Diploid Progenitors

Breeding Polyploid Varieties of Acacia: Reproductive and Early Growth Characteristics of the Allotetraploid Hybrid (Acacia mangium × A. auriculiformis) in Comparison with Diploid Progenitors

Tetraploidinių raudonųjų dobilų sėklų derlius priklausomai nuo antsėlio auginimo agrotechnikos

Comparative evaluation of diploid and tetraploid red clover accessions in a flat area of Northern Bulgaria

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