Root distribution and fibre composition of intergeneric F1 hybrid between sugarcane and E. arundinaceus.
Root distribution and fibre composition of intergeneric F1 hybrid between sugarcane and E. arundinaceus.
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甘蔗与青冈属间杂交F1的根系分布和纤维组成。
DOI：
10.1016/j.fcr.2023.108920
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发表时间：
2023
影响因子：
5.8
通讯作者：
Hisayoshi Hayashi
中科院分区：
文献类型：
--
作者：
Yoshifumi Terajima;Akira Sugimoto;Amarawan Tippayawat;Shin Irei;Hisayoshi Hayashi
改善甘蔗根系性状是提高甘蔗产量的重要育种目标，斑茅（Erianthus arundinaceus）具有耐旱性好、根系深的特点，是甘蔗育种的重要材料。本研究对甘蔗与E. arundinaceus评估的潜力，引入根特性的E。通过属间杂交将芦竹转化为甘蔗。以甘蔗品种NiF 8、E. arundinaceusclones及其属间F1杂种J 08 -12，在日本国际农业科学研究中心进行。我们评估了根分布从0到120厘米深和纤维组成，沿着与农业性状，如生物量生产力，糖和纤维含量。与E.再生植株中，J 08 -12比NiF 8具有更多的茎，且干物质产量增加。J 08 -12的糖和纤维含量介于NiF 8和E之间。arundinaceusclones. J 08 -12和E.与NiF 8相比，斑茅无性系的根干物重较大，茎根比较小。从根系分布来看，E.从土壤表层到深层，高羊茅无性系的根干重和根长密度均显著高于NiF 8。J 08 -12的根干重和根长密度也比NiF 8大，在100-120 cm土层中差异显著。根系干物质和木质素含量NiF 8处理较低，E.斑茅无性系和中间体J 08 -12。这些结果表明，甘蔗与E. arundinaceus能成功地将E.如深根分布和木质素含量高的斑茅，进入甘蔗。甘蔗与E. arundinaceus将是一个强有力的战略，以提高对不利环境的容忍度，并在未来实现可持续生产。
Improving root characteristics is an important breeding target to increase the productivity of sugarcane grown under rainfed conditions.Erianthus arundinaceusis promising breeding material for sugarcane improvement because of its excellent drought tolerance with deep roots. This study evaluated the agronomic traits and root characteristics of an intergeneric F1hybrid of sugarcane andE. arundinaceusto assess the potential for introducing the root characteristics ofE. arundinaceusinto sugarcane through intergeneric hybridisation. Field experiments using the sugarcane cultivar NiF8,E. arundinaceusclones, and their intergeneric F1hybrid J08–12, were carried out at the Japan International Research Center for Agricultural Sciences, Japan. We evaluated root distribution from 0 to 120 cm depth and fibre composition, along with agricultural traits, such as biomass productivity, sugar and fibre contents. As was observed withE. arundinaceusclones, J08–12 had more stalks than NiF8 with increased dry matter yield in ratoon crops. The sugar and fibre contents of J08–12 were intermediate between those of NiF8 andE. arundinaceusclones. J08–12 andE. arundinaceusclones had greater root dry matter weight per stool and smaller shoot-root ratios than NiF8. In terms of root distribution,E. arundinaceusclones had significantly greater root dry weights and root length densities than NiF8 from the surface to deep soil layers. J08–12 also exhibited greater root dry weights and root length densities than NiF8, showing significant differences in the 100–120 cm layer in the experiments. Root dry matter and lignin contents were low in NiF8, high inE. arundinaceusclones, and intermediate in J08–12. These results indicate that intergeneric hybridisation of sugarcane andE. arundinaceuscould successfully introduce root characteristics ofE. arundinaceus, such as deep root distribution and high lignin content, into sugarcane. Improving sugarcane root characteristics through intergeneric hybridisation withE. arundinaceuswill be a powerful strategy to improve tolerance to adverse environments and achieve sustainable production in the future.