Effects of genes increasing the number of spikelets per panicle, TAW1 and APO1, on yield and yield-related traits in rice
Effects of genes increasing the number of spikelets per panicle, TAW1 and APO1, on yield and yield-related traits in rice
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DOI：
10.1080/1343943x.2017.1365614
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发表时间：
2017-08
影响因子：
2.5
通讯作者：
A. Fukushima;H. Ohta;N. Yokogami;N. Tsuda;A. Yoshida;J. Kyozuka;M. Maekawa
中科院分区：
文献类型：
--
作者：
A. Fukushima;H. Ohta;N. Yokogami;N. Tsuda;A. Yoshida;J. Kyozuka;M. Maekawa
摘要TAWA1(TAW1)和变异穗组织(APO1)基因增加了每穗颖花数(SN)。本研究以水稻近等基因系(NILs)为材料，在田间试验中研究了这些基因对水稻形态性状、产量及产量构成因素的影响。三个近等基因系的SN和单位面积小穗总数均大于Koshihikari。然而，由于灌浆能力较低，三个近等基因系的产量并未超过Koshihikari。有趣的是，我们的田间试验表明，TAW1不影响节间直径和Pn，而APO1降低了Pn，增加了节间直径。这些结果表明，TAW1和APO1对产量相关性状的影响不同。
Abstract The genes TAWAWA1 (TAW1) and ABERRANT PANICLE ORGANIZATION1 (APO1) increase the number of spikelets per panicle (SN). In the present study, we examined the effects of these genes on morphological traits, yield, and yield-related traits including yield components using the near-isogenic lines (NILs) in the genetic background of a japonica rice variety, Koshihikari – NIL-taw1, NIL-apo1-D3, and NIL-apo1-D4 – in a field experiment. The SN and total number of spikelets per area of the three NILs were larger than those of Koshihikari. However, the yield of the three NILs did not exceed that of Koshihikari due to their low filling ability. Interestingly, our field experiments indicated that TAW1 did not affect the diameter of internodes and the PN, whereas APO1 decreased the PN and increased the diameter of internodes. These results suggest that TAW1 and APO1 differently affect yield-related traits.