Effects of Inoculating the Diazotrophic Endophyte Bradyrhizobium sp. AT1 on Different Cultivars of Sweet Potato (Ipomoea batatas [L.] Lam.)
Effects of Inoculating the Diazotrophic Endophyte Bradyrhizobium sp. AT1 on Different Cultivars of Sweet Potato (Ipomoea batatas [L.] Lam.)
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DOI：
10.3390/agronomy13040963
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发表时间：
2023-03
期刊：
影响因子：
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通讯作者：
Junko Terakado-Tonooka;F. Tanaka;T. Karasawa;A. Suzuki;Y. Ohwaki
中科院分区：
文献类型：
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作者：
Junko Terakado-Tonooka;F. Tanaka;T. Karasawa;A. Suzuki;Y. Ohwaki
由于世界范围内氮肥的短缺，重氮营养内生菌作为生物肥料受到越来越多的关注。本研究研究了重氮营养内生菌AT1在3个不同品种甘薯（cvs. gov .）上的接种效果。Beniazuma， Ayamurasaki和Kokei 14号)在花盆，容器和不同的田间条件下。接种后，根长增加。Beniazuma和Ayamurasaki在cv中被抑制。Kokei 14号在花盆里，装满了蛭石、盆栽土和珠光石的混合物。接种AT1也能促进植株的生长。牛油果中苯肼与块茎形成。在容器里装满了蛭石、盆栽土和浅色安多索。在田间试验中，3个品种分别在2个大田进行了接种AT1的试验，结果表明接种AT1能促进cvs的生长。但对cv几乎没有影响。Kokei 14号。除促进生长外，接种红薯微繁cv。含AT1的苯并菌在接种5个月后产生空气氮（Ndfa）和乙炔还原活性（ARA）。本研究表明，接种AT1能促进甘薯生长，促进固氮。
Owing to the worldwide shortage of nitrogen (N) fertilizers, diazotrophic endophytes have received increasing attention as biofertilizers. In this study, we investigated the inoculation effects of a diazotrophic endophyte (Bradyrhizobium sp. AT1) on three different cultivars of sweet potato (cvs. Beniazuma, Ayamurasaki, and Kokei No. 14) under pot, container, and different field conditions. Following inoculation, the root length was increased in cvs. Beniazuma and Ayamurasaki but suppressed in cv. Kokei No. 14 in pots, filled with a mixture of vermiculite, potting soil, and pearlite. AT1 inoculation also increased shoot growth in cv. Beniazuma and tuber formation in cv. Ayamurasaki in containers filled with vermiculite, potting soil, and light-colored Andosol. In field experiments, carried out at two field sites with the three cultivars, AT1 inoculation increased the growth of cvs. Beniazuma and Ayamurasaki, but it had almost no effect on cv. Kokei No. 14. In addition to growth promotion, inoculation of micropropagated sweet potato cv. Beniazuma with AT1 led to N derived from air (Ndfa) and acetylene reduction activity (ARA) five months after inoculation. Our studies indicate that AT1 inoculation can enhance the growth of sweet potato and promote N2 fixation.