Results 61 to 70 of about 23,176 (197)

Viabilidade in vitro de grãos de pólen de bananeira sob diferentes concentrações de ácido bórico e sacarose In vitro viability of banana pollen grain under different concentrations of boric acid and sucrose

Ciência e Agrotecnologia, 2011
Neste trabalho, objetivou-se avaliar a germinação do grão de pólen e o comprimento do tubo polínico das bananeiras diplóides M53, 8987-01 e 9197-03, Calcutá, Lidi e 86B79-12.
Ronaldo Viana dos Reis, Lucymeire de Souza Morais-Lino, Sebastião de Oliveira e Silva, Edson Perito Amorim, Carlos Alberto da Silva Ledo, Alexandre Pio Viana   +5 more
doaj  

Clonal growth characteristics and diversity patterns of different Clintonia udensis (Liliaceae) diploid and tetraploid cytotypes in the Hualongshan Mountains

Scientific Reports
Polyploidization plays an important role in plant evolution and biodiversity. However, intraspecific polyploidy compared to interspecific polyploidy received less attention. Clintonia udensis (Liliaceae) possess diploid (2n = 2x = 14) and autotetraploid (
Mian Han, Qiyang Qie, Meilan Liu, Huiqin Meng, Tiantian Wu, Yadi Yang, Lingling Niu, Genlou Sun, Yiling Wang   +8 more
doaj   +1 more source

Evolution of haploid-diploid life cycles when haploid and diploid fitnesses are not equal. [PDF]

Evolution; international journal of organic evolution, 2017
Many organisms spend a significant portion of their life cycle as haploids and as diploids (a haploid-diploid life cycle). However, the evolutionary processes that could maintain this sort of life cycle are unclear. Most previous models of ploidy evolution have assumed that the fitness effects of new mutations are equal in haploids and homozygous ...
Scott, Michael, Rescan, Marie
openaire   +4 more sources

Exploitation of diploids in Indian banana breeding programmes.

, 2011
Banana is a recalcitrant crop for improvement due to inherent plant-based constraints like polyploidy, parthenocarpy and male and/or female sterility.
Uma S., Mustaffa M.M., Saraswathi M.S. and Durai P.
core  

srs2^K41A is lethal in diploids, but not in haploids.

, 2016
srs2K41A is lethal in diploids, but not in haploids.
Kota Arai (3157806), Takashi Hishida (3157800), Kenji Keyamura (3157803)   +2 more
core   +1 more source

Comparing physiological responses of acute and chronically stressed diploid and triploid Atlantic salmon (Salmo salar)

Aquaculture Reports
We compared the performance and physiological response of diploid and triploid Atlantic salmon (Salmo salar) following 21 days of either unpredictable chronic stress (UCS) or no disturbance (control).
Angelico Madaro, Floriana Lai, Per Gunnar Fjelldal, Tom Hansen, Virginie Gelebart, Brynjar Muren, Ivar Rønnestad, Rolf Erik Olsen, Lars Helge Stien   +8 more
doaj   +1 more source

Cultivars Ploidy Influence on Variability of Some Red Clover Traits Important for Agriculture and Medicinal Purpose

Bulletin of University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca: Food Science and Technology
Red clover also known as Trifolium pratense L., is a perennial allogame plant belonging to Trifolium genus and Fabaceae family. Besides its benefits in animal feed and soil improvement, red clover was studied as well for its medicinal properties, being ...
Alexandru D. COSTIN, Leon MUNTEAN, Andreea D. ONA, Mihai C. POPA   +3 more
doaj   +1 more source

Diversity in Diploid, Tetraploid, and Mixed Diploid–Tetraploid Populations of Paspalum simplex

Crop Science, 2013
ABSTRACTThe tetraploid cytotype of Paspalum simplex Morong has a wide geographical distribution and reproduces by apomixis while the diploid grows in a restricted area in northern Argentina and behaves as cross‐pollinated. The objective was to evaluate the genetic diversity among and within natural diploid and tetraploid populations of P.
Brugnoli, Elsa Andrea, Urbani, Mario Hugo, Quarin, Camilo Luis, Martínez, Eric Javier, Acuña, Carlos Alberto   +4 more
openaire   +3 more sources

Climatic differentiation in polyploid apomictic Ranunculus auricomus complex in Europe

BMC Ecology, 2018
Background Polyploidy and apomixis are important factors influencing plant distributions often resulting in range shifts, expansions and geographical parthenogenesis.
Juraj Paule, Franz G. Dunkel, Marco Schmidt, Thomas Gregor   +3 more
doaj   +1 more source

Stable demographic ratios of haploid gametophyte to diploid sporophyte abundance in macroalgal populations.

PLoS ONE
Macroalgal populations often consist of free-living haploid (gametophyte) and diploid (sporophyte) stages. Various ecological studies have been conducted to examine the demographic diversity of haploid-diploid populations with regard to the dominant ...
Kazuhiro Bessho
doaj   +1 more source