Naslov
Mineral composition and root morphology of white lupin (Lupinus albus L.) under phosphorus deficiency in nutrient solution

Autori
Lazarević, Boris ; Vodnik, Dominik ; Poljak, Milan ; Horvat, Tea

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Skup
XVIII congress of the Federation of European Societies of Plant Biology

Mjesto i datum
Valencia, Španjolska, 04.07.2010. - 09.07.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
phosphorus deficiency; white lupin; cluster roots; root morphology; mineral composition

Sažetak
Cluster roots are an adaptation for nutrient acquisition from nutrient-poor soils. It is known that phosphorus (P) deficiency in white lupin (Lupinus albus L.) enhances cluster roots formation. Their morphology is variable but tipically, large number of determinate branch roots develop over short distances of main root axes. It has been shown that changes in the architecture of the root system, especially in root length, surface area and branching patterns, can profoundly affect the capacity of plants to uptake nutrients and water. The aim of this study was to explore root morphology and mineral composition of white lupin grown under different phosphorus concentrations in nutrient solution. White lupin plants were planted in 1 L pots containing continuously aerated nutrient solution with 0, 0, 05 and 0, 25 mM L -1 P. After 40 days root morphology and mineral composition of root and shoot were analysed. Plants grown in 0 P nutrient solution had significantly higher total root length, surface area, volume, total number of root tips and branches. No differences in number of primary lateral roots, depending on various P treatments, were found. Dry matter content both in shoots and roots and shoot to root dray matter ratio of plants grown in 0 P treatment was significantly lower in comparation to plants grown in 0, 05 and 0, 25 mM L-1 P treatments. Differences in nutrient uptake depending on analysed plant part and phosphorus treatment, were found.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

POVEZANOST RADA