Differences in seedling growth characteristics among provenances of Aegilops speltoides Tausch
1999
Cernohorska, J. | Holubec, V. | Zvara, K. | Natr, L.
Differences in physiological characteristics were analysed among accessions/provenances of Aegilops speltoides and between these accessions and the Triticum aestivum cultivar Sparta. The seedlings were cultivated for 21 days in Hoagland 3 nutrient solution. At the end of the experiment, shoot and root dry matter was determined and total plant dry mass and shoot to root ratio were calculated. Daily measurements of the leaf length were used for the calculation of the leaf growth rate and phyllochron intervals. Finally, leaf area of individual leaf blades and the nitrogen content of the whole plant were determined. With few exceptions, no statistically significant differences among accessions of Ae. speltoides were found. Compared to these accessions, T. aestivum cv. Sparta produced considerably more dry matter. This was mainly due to larger leaf blade area, while net assimilation rates were similar. It was concluded that the variability among Aegilops provenances is of minor importance and any of the tested accessions could be used as a representative of Aegilops speltoides for further experiments.
显示更多 [+] 显示较少 [-]