Sugar beet profits from intercropping with wheat both under optimum and deficient phosphorus supply
Hajiboland, Roghieh (University of Tabriz. Department of Plant Science)
Shekari, Shirin (University of Tabriz. Department of Plant Science)
Sadeghzadeh, Noushin (University of Tabriz. Department of Plant Science)
Poschenrieder, Charlotte (Universitat Autònoma de Barcelona. Departament de Biologia Animal, de Biologia Vegetal i d'Ecologia)

Data:	2018
Resum:	An experiment was conducted with wheat and sugar beet as monocrop and intercrop under low or adequate phosphorus supply. Dry matter production of shoot and roots were decreased in wheat while increased in sugar beet under intercrop conditions. Photosynthesis rate was diminished under intercrop conditions in wheat while elevated in sugar beet concomitant with reduction of transpiration rate and higher water use efficiency in the latter species. Phosphorus, potassium and iron contents were also lower in intercrop wheat while increased in sugar beet. The same effect of intercropping on biomass and nutrients uptake was observed in the short term hydroponic experiment. Interestingly, three root parameters including length, soluble carbohydrates and activity of secretory acid phosphatase that are characteristics for phosphorus-deficient plants were enhanced in both species by intercropping irrespective the phosphorus supply level. These data suggested an interspecific interaction beyond the different nutrient acquisition capacity in the intercrop pots.
Resum:	V raziskavi je bil opravljen poskus s pšenico in sladkorno peso v čisti kulturi in medsetvi v razmerah primerne in pomankljive preskrbe s fosforjem. V razmerah medsetve sta se biomasi korenin in poganjkov zmanšali pri pšenici a povečali pri sladkorni pesi. Podobno se je pri pšenici v medsetvi zmanjšala fotosinteza in povečala pri sladkorni pesi s hkratnim zmanjšanjem transpiracije in večjoučinkovitostjo izrabe vode. Pravtako so bile vsebnost fosforja, kalija in železa manjše pri pšenici v medsetvi in večje pri sladkorni pesi. Podoben učinek medsetve na biomaso in vsebnost hranil je bil opazen v kratkotrajnem hidroponskem poskusu. Zanimivo je, da so se neglede na preskrbo s fosforjem v medsetvi pri obeh vrstah povečali parametri korenin kot so njihova dolžina, vsebnost topnih ogljikovih hidratov in aktivnost izločenih kislih fosfataz, kar je značilnost rastlin, ki rastejo v pomanjkanju fosforja. Podatki nakazujejo na medvrstne interakcije, ki presegajo razlike v sposobnosti privzema hranil v lončnem poskusu z medsetvijo.
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Intercrop ; Monocrop ; Sugar beet ; Wheat ; Phosphorus deficiency ; Acid phosphatase ; Medsetev ; Čista kultura ; Sladkorna pesa ; Pšenica ; Pomanjkanje fosforja ; Kisle fosfataze
Publicat a:	Acta Agriculturae Slovenica, Vol. 111, Núm. 1 (2018) , p. 85-100, ISSN 1854-1941

Adreça original: https://ojs.aas.bf.uni-lj.si/index.php/AAS/article/view/585
Adreça alternativa: https://www.ingentaconnect.com/content/doaj/15819175/2018/00000111/00000001/art00009
DOI: 10.14720/aas.2018.111.1.09

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