The importance of haploid and doubled haploid (DH) techniques for basic and applied research, as well as to improve the speed of genetic gain when applied in breeding programs, cannot be overstated. They have become routine tools in several major crop species, such as maize (Zea mays L.), wheat (Triticum aestivum L.), and barley (Hordeum vulgare L.). DH techniques in perennial ryegrass (Lolium ...

in order to study the effects of plant density and nitrogen rates on yield, nitrate and protein of silage maize (ksc 704) in shahrekord area, an experiment was conducted during 2007 growing season at the agricultural research farm of shahrekord university. the experimental design of the experiment was randomized complete blocks with factorial arrangement with four replications. treatment consis...

Many of the major forage species used in agriculture are outcrossing and rely on the exchange of pollen between individuals for reproduction; this includes the major species used for dairy production in grazing systems: perennial ryegrass (Lolium perenne L.) and white clover (Trifolium repens L.). Cultivars of these species have been co-existing since contrasting cultivars were developed using ...

Ongoing climate change is already affecting crop production patterns worldwide. Our aim was to investigate how increasing temperature and CO 2 as well changes in precipitation could affect potential yields for different historical pedoclimatic conditions at high latitudes (i.e., >55°). The APSIM model used simulate the productivity of four annual crops (barley, forage maize, oats, spring...

An experiment of 4 3 3 weeks was carried out to analyse intake level and rate, number of meals and chewing activities of dairy goats. Four pairs of Alpine and Saanen goats in mid lactation were fed ad libitum four complete diets CR, CS, FR and FS in a Latin square design. Forage /concentrate ratio in these diets was low (C 5 30/70) or high (F 5 55/45) and starch, rapidly (R) or slowly (S) degra...

Maize is one of the most productive crops whose seeds are used in poultry sector as main ingredients their diet. It also important forage for ruminants silage. The aim this research was to assess effect defoliation and detopping on dual-purpose maize production field (Kermanshah, Iran, Mediterranean climate conditions) laboratory experiments. study included a control (intact plant), removal lea...

Maize forage is commonly used as silage in milk and beef cattle livestock production systems. Despite the wide variety of maize hybrids with high potential for grain production, few available have been developed exclusively aptitude. The present study aimed to select S3 progenies derived from single hybrid AS1572 based on combining ability traits topcrosses testers AG8025, 70.H26.1, MLP102. 135...