Predicting Seed Yield of Alfalfa Clones

Seeds of varieties with high seed yield potential usually have been less expensive than varieties with low seed yield potential. Therefore, experiments were conducted to determine: (a) whether associations between seed production potential and morphological or physiological plant characteristics exist, and (b) if such associations are of sufficient magnitude to use to identify plants having both desirable forage and seed production potential

Preedicting Seed and Forage Yields of Alfalfa Open Pollinated Progenies

Selecting traits measured in North Central Region nurseries has contributed to agronomically superior cultivars for forage production in the region, but not all of them have the genetic capacity for high seed yield in the western states. Seeds of such cultivars are also more expensive than more prolific cultivars, but both cost efficiency and traits for increased forage and seed yields are desired. That will be possible only if such traits are highly heritable and also are genetically correlated with yield attributes. For those reasons experiments were initiated in 1966 to determine: (a) whether associations between seed production potential and morphological or physiological plant characteristics exist, and (b) if such associations can be used to identify plants with both forage and seed production potentials

Accidental hepatic artery ligation in humans

Despite the vast amount of information from experimental animals, it has been difficult to obtain a clear-cut picture of the effects of ligation of the hepatic artery in humans with relatively normal livers. The last complete review of this subject in 1933 indicated that a mortality in excess of 50 per cent could be expected in non-cirrhotic patients with injury of the hepatic artery or its principal branches. Five cases of dearterialization of the normal human liver have been observed. These were due to accidental interruption of the right hepatic artery in four and the proper hepatic artery in one. The injured vessel was repaired in one case and ligated in the others. In four of the five patients the vascular disruption was the sole injury. In the other the common bile duct was also lacerated. There was no evidence of hepatic necrosis in any case although one patient died from complications of common duct repair. Transient changes in SGOT and temporary low grade bilirubinemia were commonly noted. In addition, all cases of ligation of the hepatic artery reported since 1933 have been compiled. On the basis of reviewed, as well as the presently reported cases, it is concluded that ligation of the hepatic artery or one of its branches in the patient with relatively normal hepatic function is not ordinarily fatal in the otherwise uncomplicated case. Adequate perfusion of the liver can usually be provided by the remaining portal venous flow and whatever arterial collaterals are present, unless additional factors further reduce the portal venous flow or increase hepatic oxygen need. These factors include fever, shock and anoxia. The key to therapy in unreconstructed injuries to the hepatic artery is avoidance of these secondary influences. © 1964

RB63-211 Performance of Alfalfas Under Five Management Systems

This bulletin reports stands, forage yields, and other agronomic data on alfalfas of diverse origin or type tested under five management systems at Lincoln, Nebraska. Narrow-crowned and broad-crowned types were tested. The management systems involved non-irrigated alfalfa-bromegrass tests (a) continuously grazed with steers, (b) cut for hay, and (c) rotationally grazed with sheep; an irrigated alfalfa-bromegrass test rotationally grazed with dairy cattle; and irrigated tests of alfalfas in pure stands cut for hay