A crude pea (Pisum sativum L. var. Homesteader) mitochrondrial preparation was divided into two equal parts. One part was layered on a Dextran-40 step gradient, and the other on a sucrose step gradient, and they were centrifuged to obtain different bands of particles. The densities at which the particles banded and the mitochondrial respiratory activities of the particles were determined. Dextr...

When grown at relatively high temperatures pea primary roots (Pisum sati6um L.cv. Alaska) often form long lysigenous cavities in the centers of their vascular cylinders. Factors other than temperature may be involved, however. Pea seedlings were grown at 10 and 25°C in vermiculite in a water-availability series (750–2200 ml water/2 l vermiculite) and hydroponically at various levels of aeration...

As knowledge of the gene networks regulating inflorescence development in Arabidopsis thaliana improves, the current challenge is to characterize this system in different groups of crop species with different inflorescence architecture. Pea (Pisum sativum) has served as a model for development of the compound raceme, characteristic of many legume species, and in this study, we characterize the ...

Pea forms symbiotic nodules with Rhizobium leguminosarum sv. viciae (Rlv). In the field, pea roots can be exposed to multiple compatible Rlv strains. Little is known about the mechanisms underlying the competitiveness for nodulation of Rlv strains and the ability of pea to choose between diverse compatible Rlv strains. The variability of pea-Rlv partner choice was investigated by co-inoculation...

Smýkal P. (2014): Pea (Pisum sativum L.) in biology prior and after Mendel’s discovery. Czech. J. Genet. Plant Breed., 50: 52–64. Pea (Pisum sativum L.) has been extensively used in early hybridization studies and it was the model organism of choice for Mendel’s discovery of the laws of inheritance, making pea part of the foundation of modern genetics. Pea has also been used as model for experi...

Cool-season food legumes (CSFLs) are important supplementary protein sources and soil fertility restorers for subsistence farmers in Ethiopia. Yields of CSFLs, however, are limited by low soil fertility, as they are grown in poor soils, often without fertilizer. Dekoko (Pisum sativum var. abyssinicum) is one of the CSFLs cultivated in Tigray, Northern Ethiopia. It is highly appreciated by the l...

CDC Lewochko, a yellow cotyledon field pea (Pisum sativum L.) cultivar, was released in 2018 by the Crop Development Centre, University of Saskatchewan for distribution to Select seed growers through Variety Release Committee Pulse Growers. Lewochko has good lodging resistance, medium time maturity, medium-sized, round seeds, mean protein concentration 21.0%, and yielding ability. It is resista...

Carbonic anhydrase (EC.4.2.1.1) was purified from leaves of the dicotyledon Pisum sativum L. (56-fold) and from leaves of the monocotyledon Tradescantia albiflora Kunth. (24-fold). The molecular weight of the Pisum enzyme was estimated to be 188,000 +/- 8,000 with subunit sizes of 28,000 +/- 3,000 and 56,600 +/- 3,500. It contained 1 mole zinc per 32,500 +/- 2,000 g protein. The molecular weigh...

Pyruvate, Mercaptopyruvate, Lemna, Spinacia, Pisum, Chlorella, Synechococcus, Rhodopseudomonas Mercaptopyruvate sulfotransferase activity catalyzes the formation of pyruvate from mercapto­ pyruvate in the presence of suitable reagents as acceptor. It was detected in Lemna minor, Pisum sativum, Spinacia oleracea, Chlorella fusca, Synechococcus 6301, and Rhodopseudomonas palustris. Best activity ...

Pea powdery mildew, caused by Erysiphe pisi D.C., is an important disease worldwide. Deployment of resistant varieties is the main way to control this disease. This study aimed to screen Chinese pea (Pisum sativum L.) landraces resistant to E. pisi, and to characterize the resistance gene(s) at the er1 locus in the resistant landraces, and to develop functional marker(s) specific to the novel e...