. Cranberries; : the national cranberry magazine. Cranberries. needed for closed populations to avoid excessive interbreeding. Interbreeding may cause shot brood, a situation in which the colony loses some of its viability in that fewer than normal numbers of fertihzed eggs develop into workers. Instead, many of the fertilized eggs develop into abnormal bees known as diploid males-bees with homo- zygous sex alleles. Workers, or heterozygous females, rid the colony of the abnormal males by eating them as soon as they are hatched. Normal males, or drones, develop only from unfertilized eggs. Unt
. Cranberries; : the national cranberry magazine. Cranberries. needed for closed populations to avoid excessive interbreeding. Interbreeding may cause shot brood, a situation in which the colony loses some of its viability in that fewer than normal numbers of fertihzed eggs develop into workers. Instead, many of the fertilized eggs develop into abnormal bees known as diploid males-bees with homo- zygous sex alleles. Workers, or heterozygous females, rid the colony of the abnormal males by eating them as soon as they are hatched. Normal males, or drones, develop only from unfertilized eggs. Until now, shot brood has been the bugaboo that has kept artificial insemination (AI) from becoming a powerful tool for most kinds of selective breeding. To avoid shot brood, USDA scientists began a hybrid bee breeding program using AI in 1943. In order to produce excellent hybrids, many inbred lines had to be selected, maintained and tested, said Erickson, but the Unes were easily lost. Despite failures, however, there have been successes. Agricultural research technician Emmett R. Harp and Erickson developed a line of bees that are extraordinarily gentle and well suited for beekeeping around urban areas. Release of this Une of bees that are extraordinarily gentle and well suited to the industry is planned for next year. Until the Congress passed tire most recent farm bill, the USDA could turn over plant germplasm to private industry but it could not release bee germplasm that it had developed in the course of research. "The new line of bees are good ^ CORP. ^ CRANBERRIES BOUGHT & SOLD VINES for 1983 Order Early - Supplies Limited Early Black $2,500 ton Howes $2,750 ton Centennials $2,250 ton Crowleys $ Call Duxbury, Mass. Complete Bog Management Service Available Screened bog sand $1 per yard loaded on your truck Middleboro location. Cordwood Road Duxbury, Mass. 02332 Office 934-6076. Please note that these images are extracted from scanned page images that
Size: 1169px × 2138px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookcontributorumassamherstlibraries, bookspons
