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How to search herbicide stress in plant system at molecular level?

100%
Korbin M., Adamczewski K., Twardowski T.
Nauka
|
2009
|
issue 2
PL
Application of herbicides is connected with stress in plant system. Molecular signals of stress are of significant value. How to find them?
2
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Chicomexochitl y el maíz entre los nahuas de Chicontepec: la continuidad del ritual

88%
de la Cruz Cruz V.
Politeja : Pismo Wydziału Studiów Miedzynarodowych i Politycznych Uniwersytetu Jagiellońskiego
|
2015
|
issue 7(38)
129-147
EN
The cultivation and veneration of corn is central to all Mesoamerican cultures. Long before the Spaniards arrived indigenous people worshiped corn and pleaded for each harvest to be as good as the preceding one. Today’s Nahuas consider corn sacred and never permit it to lie on the ground: it must always be protected and sheltered. The Nahuas of Chicontepec, Veracruz continue to dance and pray to the corn deity, Chicomexochitl “Seven Flower”. This paper reveals the continuity of ritual practices and symbolism relating to the worship of maize in Nahua culture from prehispanic times to the present. It is based on the sixteenth‑century written sources, recent anthropological studies, and my own fieldwork associated with the Chicomexochitl ritual.
3
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Conservation of the genetic diversity of local corn (Zea mays L.) in the Yucatan Peninsula, Mexico

75%
González-Valdivia N. A., Cetzal-Ix W., Basu S. K., Pérez-Ramírez I., Martínez-Puc J. F., Zandi P.
Annales Universitatis Paedagogicae Cracoviensis Studia Naturae
|
2016
EN
The production of native corn at regional level is greatly limited by the seasonality of rainfall, availability of adequate lands, poor fertility status of the soil, high input costs and constraints of resources of the local corn growers and/or producers. The challenges of reduced cultivable area give very little opportunity for increasing production area in a sustainable manner; it is important to note that the soil recover their fertility status through crop rotation and prolonged rest period (> 25 years) known as sequential agroforestry system or "milpa". During 2015, corn collections were performed in the Yucatan Peninsula, Mexico that included five races from the Yucatan (in localities of Nohacal and Peto) and Campeche (Calakmul, Suc-Tuc, Sakabchen, I Chek) states. The races identified were: 1) Nal-Tel (gallito), 2) Dzit Bacal, 3) Xnu’uc Naal (Tuxpeño), 4) Palomero and, 5) Tabloncillo. The local varieties, Pix Cristo (Knees of Christ), Eh Hu (Purple maize) and Chac Chu’ub (Chac´s Blood or Red maize), are included within the Tuxpeño (Xnu´uk Naal) race. The land race of corn that is in imminent danger of extinction is Nal-Tel, characterized by its precocity and ability to escape periods of low rainfall; is important to rescue it for adoption to the practices of local and regional production. The adaptation of this race as a germplasm is important due to its resilience to climate change itself. Palomero, Tabloncillo, Pix Cristo, Chac Chu´ub and Eh Hu can thus be used in traditional food industry, to preserve the traditional knowledge and to provide opportunities for additional income for the local, rural communities. Yellow Palomero and Tabloncillo races are new records of germplasm for the region; and hence essential is exchanging their seeds among local producers and growers.
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