Results 31 to 40 of about 1,363 (176)
Vanilla planifolia Jacks. is an orchid of great economic interest, classified as endangered. The limited genetic variation of this species has been primarily attributed to its clonal propagation.
Zelzin Eréndira Fernández-Villa +2 more
doaj +1 more source
Raphiodon echinus é uma espécie de hábito rasteiro, que ocorre espontaneamente em áreas de caatinga. No presente trabalho foram observados a biologia reprodutiva desta espécie com o objetivo de contribuir com informações sobre sua ecologia da polinização.
Carla Tatiana de Vasconcelos Dias +1 more
doaj +1 more source
Tiny, leafless fairy lanterns are easily overlooked on the forest floor. Thismia abei, endemic to Japan, persists in small, unstable populations and is listed nationally as Critically Endangered. Our recent work has revealed another, less obvious form of obscurity.
Kenji Suetsugu +2 more
wiley +1 more source
Background. An important task is to search for and select highly self-fertile cultivars for plant breeding programs and for setting single-cultivar plantings in commercial horticulture.Materials and methods.
O. A. Tikhonova
doaj +1 more source
Elevated CO2 promotes the growth of Xanthium strumarium while increasing its susceptibility to the systemic herbicide trifloxysulfuron‐sodium. The efficacy of the soil‐active herbicide fluometuron remains unaffected by changes in CO2 concentration and temperature.
Islam Emrah Suer, Nihat Tursun
wiley +1 more source
Puya raimondii, an endangered high-Andean species, exhibits life-history traits that may strongly influence its reproductive strategy; however, its reproductive biology remains poorly understood. Here, we assessed its floral biology, breeding system, and
Fernando H. Calderon-Quispe +2 more
doaj +1 more source
We present the first phylogenetic analysis of the Californian species of Myosurus. Our ddRADseq analysis reveals considerably more diversity than what was recognized in recent floristic treatments. Myosurus minimus subsp. apus was found to be a rare species restricted to Southern California and northwestern Baja California.
R. Douglas Stone +2 more
wiley +1 more source
Pollination by native bees increases fruit mass without changing protein content in snap beans [PDF]
: Insects play a vital role in agricultural production by enhancing both the quantity and quality of fruits and seeds in a wide range of allogamous and autogamous crops. The common bean (Phaseolus vulgaris) exemplifies an autogamous crop that can benefit
Cleyton Tenório Barros +5 more
doaj +2 more sources
Analysis of the reproduction mode in Psidium spp. using the pollen:ovule ratio
This research aimed to explore the reproductive characteristics of three species of Psidium (P. guajava L., P. cattleyanum Sabine, and P. guineense Sw.) and estimate a probable reproduction strategy based on the pollen:ovule (P:O) methodology.
Maria Lorraine Fonseca Oliveira +3 more
doaj +1 more source
Is there a hybridization barrier between Gentiana lutea color morphs? [PDF]
In Gentiana lutea two varieties are described: G. lutea var. aurantiaca with orange corolla colors and G. lutea var. lutea with yellow corolla colors. Both color varieties co-occur in NW Spain, and pollinators select flower color in this species.
María Losada +5 more
doaj +2 more sources

