Authors: András Farkas István Molnár Tibor Kiss Ildikó Karsai Márta MolnárLáng
Publish Date: 2013/07/13
Volume: 195, Issue: 1, Pages: 45-55
Abstract
The heading characters and morphological traits of two partial sets of wheat–barley disomic addition lines namely Mv9kr1/Igri and Asakaze/Manas were evaluated under controlled environmental conditions in a phytotron under longday shortday and nonvernalised conditions and in fieldsown experiments The winter barley chromosome additions significantly influenced the flowering time of wheat both in the controlled environment test and under fieldsown conditions Of all the barley addition lines the effect of the 4H and 7H additions was the most characteristic The 7H addition lines were the earliest in both cultivar combinations in each treatment In the Mv9kr1/Igri combination the 4H addition was the latest under all the environmental conditions In the Asakaze/Manas combination 4H addition was the latest under shortday and longday illumination in the phytotron but the 6H addition was the latest without vernalisation and in the field in 2012 There was 12 and 11 days difference between the flowering times of the 7H and 4H Mv9kr1/Igri and Asakaze/Manas addition lines in the field in 2012 which increased to 52 and 44 days under shortday illumination in the phytotron In the winter wheat background the addition of 2H carrying the photoperiod sensitivity gene PpdH1 decreased the flowering time under the short photoperiod regime but had a very strong delaying effect under fieldgrown conditions Considering the yield components under field conditions 4H was the most fertile of the addition lines while 7H showed the highest tillering capacity and Igri 3H had good tillering capacity and the highest number of seeds per plantThis work was financed by the Hungarian National Scientific Research Fund OTKA K 75381 and K 104382 by a Bolyai János Research Fellowship to IM and by TÁMOP grant No 422 A11/1 KONV–2012–0064 The technical assisstance of Julianna Bucsi is gratefully acknowledged Thanks are due to Barbara Hooper for revising the manuscript linguistically
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