首页|弱光下PGPR对重瓣百合开花期光合特性及生长的影响

弱光下PGPR对重瓣百合开花期光合特性及生长的影响

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以荷兰重瓣百合'Carolina'为材料,利用盆栽试验,研究弱光下单接种根际促生细菌鞘氨醇杆菌属(SN-2)、 不动杆菌属(BG和XG)和黄金杆菌属(F)及4种混合菌液接种对植株的光合指标及生长发育的影响.结果表明:在70%遮荫条件下,接种不同菌株对'Carolina'开花前后的光合特性及生长的促进效应存在一定差异性;与对照相比,接种XG、SN-2和HH明显提高了植株的最大净光合速率(Pmax)、 光饱和点(LSP)和表观量子效率(?),其中接种HH对'Carolina'产生的影响要大于单接种XG和SN-2,说明不同菌种之间可能存在交互效应,而接种F和BG对'Carolina'植株的促生效果不明显,这可能与光照强度有关.此外,接种XG、SN-2和HH显著提高了'Carolina'叶片叶绿素相对含量和株高,HH对株高的促进作用较为明显,且HH和SN-2使'Carolina'整体开花时间比对照提前了3~7 d,XG次之.
Effects of Plant Growth Promoting Rhizobacteria on Photosynthetic Characteristics and Growth of ′Carolina′Before and After Florescence Under Low Light
Taking Holland double Lily ′Carolina′ as material, the photosynthetic indexes and plant growth were researched by inoculating potted with Sphingobacterium ( SN-2) , Acinetobacterium ( BG and XG) , Chryseobacte-rium ( F) and 4 mixed PGPR strains under low light conditions. The results showed that with 70% shading condi-tion, there were some differences on promoting photosynthetic characteristics and growth of′Carolina′which inocu-lated different strains before and after flowering, the maximum net photosynthetic rate (Pmax), light saturation point ( LSP ) and apparent quantum yield (?) of plants were significantly increased by inoculatingwith XG, SN-2 and HH compared with the control, while the effect of mixed inoculation of HH on′Carolina′was better than that of sin-gle inoculation with XG and SN-2, which indicated that there may be an interactive effect among different strains, but the growth effect was not obvious by inoculating F and BG strains, which may be related to light intensity. In addition, the SPAD content and plant height of ′Carolina′ were significantly increased by inoculating with XG,SN-2 and HH, especially the effect of HH on plant height was obvious. HH and SN-2 promoted the flowering time of ′Carolina′to be 3 to 7 days earlier than the control, and XG followed.

Lily ′Carolina′low lightrhizobacteriaphotosynthetic characteristicgrowth index

艾星梅、郑舒媛、杨艳余、黄海泉

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西南林业大学园林学院, 云南 昆明650224

百合'Carolina' 弱光 细菌 光合特性 生长指标

国家林业局948项目云南省中青年学术和技术带头人培养项目云南省花产办项目及云南省教育厅重点项目国家林业局西南风景园林工程技术研究中心项目云南省园林植物与观赏园艺省级重点学科、云南省高校园林植物与观赏园艺重点实验室及云南省高校园林植物与观赏园艺科技创新团队项目

2014-4-182015HB04609Z00662016-4850097401

2017

10.11929/j.issn.2095-1914.2017.05.012

西南林业大学学报
西南林业大学

西南林业大学学报

CSTPCD北大核心
影响因子：0.773
ISSN：2095-1914
年,卷(期)：2017.37(5)
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