A method to estimate pollen viability from pollen size variation.

Potential Male Gametophyte Competition among Camellia Sinensis Genotypes in Isolated Biclonal Seed Orchards

Male fertility of crop plants is a function of pollen production and viability. In breeding, it is a requirement that there be similar fertilities among breeding parents within seed orchards. An in-vitro germination method was used in this study to determine variation in pollen viability among eight tea (Camellia sinensis) genotypes, over three flowering seasons in four isolated biclonal seed o...

The Feasibility Study on the Prediction of Ploidy Levels Base on Pollen Dimensions in Rosa

Ploidy level is one of important factors for plant breeders; therefore models that can predict it are very practical. To estimate of ploidy levels in some species, hybrids and cultivars of Rosa, dimensions of over 500 pollens include pollen length, width and area measured at ABRII. The calculations were carried out in several stages. First, Ploidy levels were regressed with pollen dimensions, a...

Quantitative reconstruction of past climates using extension of modern climate-pollen relations based on the MAT method

  Introduction Instrumental records span only a tiny fraction (<107) of the Earth’s climatic history. Therefore, indirect source of climate data must be used. Subfossil pollen and plant macrofossil data derived from sediment profiles can provide quantitative information on past climate. Recognizing the relationship between pollen assemblages and climatic variables and then interpreting foss...

Impedance Flow Cytometry: A Novel Technique in Pollen Analysis

INTRODUCTION An efficient and reliable method to estimate plant cell viability, especially of pollen, is important for plant breeding research and plant production processes. Pollen quality is determined by classical methods, like staining techniques or in vitro pollen germination, each having disadvantages with respect to reliability, analysis speed, and species dependency. Analysing single ce...

Effects of humidity and temperature on pollen viability of shahani dates