The article presents the seed productivity of five cultivars Poa pratensis L . for lawn purposes and three wild-growing specimens angustifolia from natural populations in south-east Kazakhstan south-west Siberia, summarized over years. onset main phenological phases was determined, taking into account weather conditions region where experiment held, a comparative analysis between samples carrie...

Immediate use of freshly collected testis tissue in diagnosis or in reproductive technologies is not always possible or desirable. Therefore, the ability to properly preserve the tissue for varying intervals is an essential step for maximizing the use of the source tissue. Preservation of gametes and gonads is a topic of interest in reproductive biomedicine. Other chapters in this book have ele...

Reproductive competence is one of the most important components in the overall management of a cow-calf operation. The ability to maintain a 365-day calving interval in a high percentage of the females influences the profitability of all breeding operations. In most cases, low reproductive efficiency can be directly linked to the nutritional status of the animal(s). Research has shown that poor...

Alcohol use affects all three parts of the hypothalamic-pituitary-gonadal (HPG) axis, a system of endocrine glands and hormones involved in male reproduction. Alcohol use is associated with low testosterone and altered levels of additional reproductive hormones. Researchers are investigating several potential mechanisms for alcohol's damage. These mechanisms are related to alcohol metabolism, a...

A debate among gynecologic and reproductive surgeons is whether or not there is a clinical need to treat all intramural myomas. Considerations include myoma size and number, ability to access them, whether or not they compromise the endometrium, and treatment effect on gynecologic, reproductive, and obstetric outcomes. We conducted a detailed study regarding intramural myomas, their prevalence ...

This article examines how political controversies affect citizens' ability to exercise sexual and reproductive rights in Latin America. The article argues that societies accommodate conflicting views on sexuality and reproduction with a "double discourse system," which defends repressive or negligent public policies while privately tolerating unofficial and often illegal mechanisms that expand ...

quantitative ultrasound (qus) is a noninvasive, inexpensive and portable method for bone densitometry. it may measure some other parameters in addition to bmd, like elasticity and micro architecture. this study designed to determine the relation between reproductive factors and calcaneus qus parameters in normal women of tehran. bmd of heel in 151 normal women, 20-72y/o (participator of iranian...

Postmating, prezygotic phenotypes, especially those that underlie reproductive isolation between closely related species, have been a central focus of evolutionary biologists over the past two decades. Such phenotypes are thought to evolve rapidly and be nearly ubiquitous among sexually reproducing eukaryotes where females mate with multiple partners. Because these phenotypes represent interpla...