Camellia yuhsienensis was used to cross with oleifera improve the resistance of oil camellia anthracnose. However, unilateral cross-incompatibility (UCI) between C. and found during breeding process. Five C.oleifera cultivars four uhsienensis materials were tested confirm UCI . ‘Huashuo’ (HS) ‘Youza 2’ (YZ2) represent these two species characterize UCI, including pollen tube growth, fertilizati...

Abstract Adenium obesum (Forssk.) Roem. & Schult., popularly known as desert rose, has become a valuable ornamental plant. In floriculture, the production of hybrids is prioritized. Hence, knowledge on floral biology and sexual reproduction target species fundamental. The objectives this study were: (1) to test sucrose concentrations temperatures for in vitro germination A. pollen grains; (...

Endosperm development in Zea mays is characterized by a period of intense mitotic activity followed by a period in which mitosis is essentially eliminated and the cell cycle becomes one of alternating S and G phases, leading to endoreduplication of the nuclear DNA. The endosperm represents a significant contribution to the grain yield of maize; thus, methods that facilitate the study of cellula...

Background The kernel number of maize (Zea mays L.) at maturity is mainly determined the time around pollination. Kernel abortion frequently occurs during this period, leading to grain yield depressions. Plasma membrane (PM) H+-ATPase was identified as a key enzyme responsible for supply assimilates developing kernels shortly after Aims This study aimed stimulating PM activity in by vivo applic...

Apple (Malus x domestica) fruit size is dependent on cell division and expansion, processes that are subsequently regulated by plant hormones such as auxins, gibberellins, cytokinins. In this study, we investigated the role of expansion in apple growth identified which two was more deterministic final size. Three cultivars different sizes were selected, namely, “Twenty Ounce” (large-sized), “Ro...

Pollination is the mechanical transfer of male pollen of a flower on the female stigma.This process has a fundamental role to survive the plants species.Since this process is invisible ,its importance has been ignored.Insufficient pollination can be harmful for the farmer instead of being useful.Pollination can be done via some ways.The most important ways are done by insects and wind.Pistachio...

Xerophvllunz rentuc is a mass-flowering, nectarless herb in which self-pollination is unavoidable as anthers shed pollen onto the three, receptive stigmatic ridges attached to each pistil within a few hours after expansion of the perianth. We compared the pollination system with reproductive success in this species through controlled. hand-pollination experiments. Ovaries of flowers sampled fro...

Autophagy is one of the main mechanisms of degradation and remobilization of macromolecules, and it appears to play an important role in petal senescence. However, little is known about the regulatory mechanisms of autophagy in petal senescence. Autophagic processes were observed by electron microscopy and monodansylcadaverine staining of senescing petals of petunia (Petunia hybrida); autophagy...

We investigated the reproductive biology of three plants endemic to rosemary scrub habitats on the Lake Wales Ridge of Florida, USA. We used hand-pollination experiments and observations of flowers and their insect visitors to determine their mating systems and pollination. Fruit or seed set after self pollination was 94, 97, and 8% of fruit or seed set after cross pollination in Eryngium cunei...