Polyembryony in maize pdf

2020-01-25 13:25

In the Colegio de Postgraduados in Mexico, we have generated lines of maize (Zea mays L. ) with the particularity that from a seed two or more stalks emerge and develop normally, calling that character tallos gemelos. This trait possibly modifies the proportions of the constituent tissues of the seed and could increase the nutritional and nutraceutical quality of the grain.Maize is thought to have originated at least 5000 years ago in the highlands of Mexico, Peru, Ecuador, andor Bolivia because of the great density of native forms found in the region. There have been four principal and several minor theories regarding the origin of maize: (1) the cultivated maize polyembryony in maize pdf

Polyembryony has been classified as either false or true. False polyembryony involves fusion of two or more nucelli or development of two or more embryo sacs within the same nucellus. In true polyembryony the additional embryos arise in the embryo sac either by cleavage of

Morgan DT, Rappleye RD (1951) Polyembryony in maize and lily following Xirradiation of the pollen. J Hered 42: 9193 Google Scholar Pesev N, Petrovic R, Lecevic L, Milosevic M (1976) Study of possibility in raising maize inbred lines with two embryos. Abstract. The histological analysis enabled to distinguish the main types of polyembryony in maize according to the origin of embryos connected with their localization in caryopses, differences in their structure (presence of common tissues) and type of germination. polyembryony in maize pdf putative loci associated to polyembryony in maize populations Polyembryony (PE) is a reproductive phenomenon that produces more than one plant per seed in maize and other species. The objective of this study was to identify polymorphic DNA bands associated to the genetic expression of

Mar 01, 1951  D. T. MORGAN, JR. , R. D. RAPPLEYE; POLYEMBRYONY IN MAIZE AND LILY: Following Xirradiation of the Pollen, Journal of Heredity, Volume 42, Issue 2, 1 March 195 We use cookies to enhance your experience on our website. By continuing to polyembryony in maize pdf PDF On May 9, 2018, Mariela R. Michel and others published Polyembryony in Maize: A Complex, Elusive, and Potentially Agronomical Useful Trait pdf. Alkaline Cooking Quality of Polyembryonic and NonPolyembryonic Maize Populations Later, schemes of A special feature of maize is polyembryony (PE), recurrent selection were applied to increase the which refers to the formation of several embryos in a seed polyembryony frequency, achieving levels of 47 by (Batygina and Vinogradova Polyembryony is the phenomenon of two or more embryos developing from a single fertilized egg. [1 [2 [3 Due to the embryos resulting from the same egg, the embryos are identical to one another, but are genetically diverse from the parents. Polyembryony in Cycadales is not a common occurrence Rao (1964), however, reported simple polyembryony in Cycas Circinalis (Fig. 20. 1 A). Two adjacent archegoia of the same ovule in this species sometimes develop independently into two embryos and also rarely into two seedlings.

Rating: 4.83 / Views: 966

A list of my favorite links