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Plant nitrogen distribution in wild tetraploid triticum turgidum dicoccoides and hexaploid wheat triticum aestivum



Plant nitrogen distribution in wild tetraploid triticum turgidum dicoccoides and hexaploid wheat triticum aestivum



Euphytica 33(3): 641-650



Differences were found in total N uptake and its pattern of distribution in the main tiller among 5 lines of wild tetraploid wheat (T. turgidum dicoccoides), and between it and 2 hexaploid wheats (T. aestivum) under low (48 ppm) and higher (240 ppm) levels of soil N. Under the low soil N level the hexaploids had higher amounts of total N in the main tiller than the dicoccoides lines, but under the higher soil N level, 3 of the dicoccoides lines had significantly (P < 0.01) higher, and the other 2 lines, similar amounts as the hexaploids. The total amount of grain N in the hexaploids was significantly (P < 0.01) higher than the 5 dicoccoides under the low N soil level but under the higher level, 2 of the dicoccoides lines had similar amounts as one of the hexaploids (cv. Bencubbin) but significantly (P < 0.01) lower than the other (cv. Argentine IX). The efficiency of N translocation to the grain was significantly (P < 0.01) lower in a primitive, compared with 4 cereal forms of dicoccoides under both low and high levels of soil N. The cereal forms of dicoccoides, while similar in N translocation efficiency under low soil N as the lower translocation efficiency hexaploid (cv. Bencubbin), were significantly (P < 0.01) and substantially lower than it under the higher soil N level.

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Accession: 006126275

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DOI: 10.1007/bf00021892


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