Nuclear DNA content and chromosome number in Brachiaria spp. genotypes
نویسندگان
چکیده
منابع مشابه
Mitotic behavior in root tips of Brachiaria genotypes with meiotic chromosome elimination during microsporogenesis.
Three accessions of Brachiaria brizantha, three of B. humidicola, and two interspecific hybrids between B. ruziziensis and B. brizantha were analyzed with regard to their mitotic behavior in root tips. All these genotypes revealed chromosome elimination or lack of chromosome affinity in previous analyses of microsporogenesis. Analyses of root tips showed a normal mitotic division in all accessi...
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ABSTRACT- Bromus danthoniae Trin. is an annual grass species which grows mainly on dry grassy rocky mountain slopes and grassy steppe, and is grazed by many herbivores and recognized as a useful pasture plant. The chromosome number, morphological and anatomical traits of 82 genotypes of B. danthoniae belonging to three sub-taxa were investigated. Twenty-seven quantitative and 20 qualitative mor...
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Protodioscin is used as a marker of saponin content that could cause hepatotoxicity in ruminants. In Brachiaria spp. from two regions of the Colombian Eastern Plains (east mountain range of the Andean-"piedemonte" and Ariari River Valley) were determined this metabolite at 14 and 28 days post-cutting under different climatic conditions. No protodioscin was detected in B. dictyoneura or B. humid...
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Extensive karyotype analysis including determination of somatic chromosome number, total chromosome length and volume and estimation of 4C DNA content were carried out on three species of Pachypodium namely P. lamerei; P. namaquanum and p rosulatum ' horombense' for the first time. A significant variation in nuclear DNA amount was recorded at interspecific level. The somatic chromosome number 2...
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The study of metaphase chromosomes of ascites tumors has shown that, for a given strain of tumor, there is found a characteristic modal chromosome number (referred to as «),which frequently lies near that of the diploid number for the host organism (3). Other tumors have modal numbers in the tetraploid range, this condition appearing to enhance the ability of the tumor cells to grow in host st...
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ژورنال
عنوان ژورنال: Revista Ciência Agronômica
سال: 2014
ISSN: 1806-6690
DOI: 10.1590/s1806-66902014000100008