Flowering traits in tetraploid Brachiaria ruziziensis breeding
نویسندگان
چکیده
منابع مشابه
Microsporogenesis analysis validates the use of artificially tetraploidized Brachiaria ruziziensis in breeding programs.
The genus Brachiaria contains species that have great economic importance in the Brazilian agricultural sector, as they enable cattle ranching on acid and poor soils with species that are resistant to spittlebugs and form crop-livestock-forest integration systems. The genus mainly consists of tetraploid (2n = 4x = 36) and apomictic species such as B. decumbens and B. brizantha. Sexuality is fou...
متن کاملPhenotypic characteristics for discrimination between advanced genotypes of Brachiaria ruziziensis.
The aim of this study was to use multivariate methods and Pearson and partial correlations to disregard phenotypic characteristics that contribute little to differentiation between Brachiaria ruziziensis genotypes. Eighty-one genotypes of B. ruziziensis were assessed in completely randomized blocks with three replications. Ten phenotypic characteristics were assessed: plant height, leaf length,...
متن کاملShoot and root growth of two tropical grasses , Brachiaria ruziziensis and B . dictyoneura ,
Phosphorus (P) deficiency and aluminium (Al) toxicity are widespread in Oxisols of the tropical savannas of eastern Colombia. A field experiment was conducted to determine the effect of Al toxicity and P deficiency on plant growth and nutrient uptake of two Brachiaria species. To examine the influence of nutrient supply and lime on root and shoot growth, two levels of fertiliser application (lo...
متن کاملThe Damage Capacity of Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae) Adults on Brachiaria ruziziensis Pasture
The aim of this study was to determine the damage caused by adult Mahanarva spectabilis (Distant, 1909) (Hemiptera: Cercopidae) on Brachiaria ruziziensis (Germain & Evard) under field conditions. A total of 0, 4, 8, 12, or 16 M. spectabilis adults per plot were maintained for 6 days. Thereafter, the insects were removed from the plant, and the following parameters were evaluated: chlorophyll co...
متن کاملMicrosporogenesis in tetraploid accessions of Brachiaria nigropedata (Ficalho & Hiern) Stapf (Gramineae).
The genus Brachiaria (Trin.) Griseb. has achieved considerable importance to cattle production systems, as a result of the good production and adaptation of a few cultivars to poor and acid soils of the Brazilian savannas. Many of its species and accessions are polyploid and apomictic, which limits direct hybridization. To assist the breeding program, cytogenetic characterization has been under...
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ژورنال
عنوان ژورنال: Crop Breeding and Applied Biotechnology
سال: 2016
ISSN: 1984-7033
DOI: 10.1590/1984-70332016v16n2a15