Nia n HaiGuo ZhihuaYu Yang chaiLu Yongg enHuang He.EVALUATIONS FOR LOW- P TOLERANCE OF SOYBEANCULTIVARS FROM DIFFERENT GEOGRAPHICAL ORIGINS[J].Soybean Science,1998,17(02):108-114.[doi:10.11861/j.issn.1000-9841.1998.02.0108]
不同来源大豆品种耐低磷能力的评价
- Title:
- EVALUATIONS FOR LOW- P TOLERANCE OF SOYBEANCULTIVARS FROM DIFFERENT GEOGRAPHICAL ORIGINS
- Keywords:
- Soy bean; Low - P soil; To lera ne
- 文献标志码:
- A
- 摘要:
- 本试验采用适应高磷肥沃土壤的东北大豆品种,适应浙江低丘红壤的耐低磷品种浙春2以及原产我国华南低磷土壤的广东当地品种为材料,对不同来源品种的耐低磷能力进行了评价。试验在缺磷红壤中进行,施磷分别为0, 2. 5和5g /盆,每盆2. 5kg 土。试验结果表明,不同地理来源的品种对低磷土耐性明显不同。东北品种明显不耐低磷,而浙春2和一些广东品种对低磷或中等磷水平土壤适应性较好。广州中粒春豆地上和地下干物重在不同处理均最高,而且随磷施用量增加而增高。浙春2、梅州春豆和南雄黄豆在2. 5g 磷水平时,根干重就达最高值,而地上干重也达5g水平的90% 以上,说明这些品种较耐低磷。株高、地上和地下干物重在低磷水平下相关都达极显著水平,说明这几个性状都可作为鉴定大豆品种耐低磷的指标。在低磷情况下大豆叶质重增重。高耐低磷和中等耐性的品种都是在2. 5g 磷水平时光合速率最高,这与不耐低磷品种是不同的。耐低磷能力与叶温、叶室温度以及蒸腾速率无关。
- Abstract:
- Three cultiv ars adapted to ferti le soi ls of No rtheast China , o ne cultiva r ada pted tolow land acid red soil and six local v arieties g row n in low - P soi ls of So uth China w ereused to evaluate dif ferences in tolerance o f low - P soil. The ex periment w as co nductedin acid red soi l and P levels w ere 0, 2. 5 a nd 5g ( as Ca( H2 PO4 ) 2· Ca( SO4 ) 2 ) each 2. 5kgsoil po t, respectiv ely.The result indicated that sig nificant v arietal dif ferences were abserved under low -P st ress, and the cultiv ars obtained f rom Nor theast China w ere no t tolerant to low - Psoil, but cul tivars, such as Zhe Spring 2 and some o f cultiva rs from South China, w eremore adapted to low - P o r medium low - P soi ls. Under di ffering st ress, bo th dryw eight of root and shoo t fo r ″G Z Spring″w ere signi fica nt ly high est and it s dry w eigh tso f roo t a nd shoo t increased a s the increase o f P supply. At 2. 5g P lev el , the cultiv ars,Mei zhou Spring , Na n X and Zhe Spring 2, reached the hig hest root dry weight andabove 90% of the highest shoot dry weight , respectively. This indicated thei r hig hertolerance to low - P soi ls. The correlatio ns betw een plant heig ht , root dry weight andshoot dry w eight w ere positiv e a nd signi fica nt under low - P st ress, indica ting that all ofthese cha racters can be used sati sfactorily as t rai ts fo r the idi fica tion of di fference of soybean in to lerance to low- P soil. Leaf dry w eig ht per uni t leaf area w ere higher at low -P level. Pho tosythesi s rates of reached the highest value fo r each low - P, tolerance andmiddle to lera nt v arieties at 2. 5g P level, w hich w as dif ferent from tha t of intolerant cultivars. Low - P tolerance in cultiv ars were not related wi th the temperatures of leaf andinternal leaf and t ra nspiratio n rate.
参考文献/References:
[1 ] 王连铮、王金陵等, 1992,大豆遗传育种学,北京,科学出版社, 268- 313
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