【摘要】：利用Hoagland’s營(yíng)養(yǎng)液培養(yǎng)的方法,探討了百農(nóng)1306、百農(nóng)1309、百農(nóng)160、百農(nóng)418、溫麥6號(hào)、周麥18、周麥22和周麥26等8個(gè)不同基因型小麥品種(系)的Pb積累特性,以篩選出籽粒Pb低積累型小麥品種(系),并研究了Pb對(duì)小麥Ca、Mg、Fe和K等礦質(zhì)元素積累的影響,為解決重金屬積累和礦質(zhì)營(yíng)養(yǎng)利用之間的矛盾奠定基礎(chǔ)。結(jié)果表明,小麥籽粒Pb含量存在基因型差異,百農(nóng)418籽粒Pb含量最低,溫麥6號(hào)Pb含量最高。根據(jù)同一品種(系)的最高Pb含量部位,將8個(gè)小麥品種(系)分為籽粒型、穎殼型、葉片型,對(duì)應(yīng)品種(系)分別為溫麥6號(hào),百農(nóng)1306、百農(nóng)1309、周麥22,百農(nóng)160、百農(nóng)418、周麥18、周麥26。與不加Pb(NO_3)_2的對(duì)照相比,Pb(NO_3)_2處理后,8個(gè)小麥品種(系)不同部位的Ca、K、Mg、Fe含量變化不同。除周麥22莖稈中Ca含量顯著增加外,其他7個(gè)品種(系)均降低;8個(gè)品種(系)莖稈(周麥22、26除外)、葉片和穎殼中K含量均呈降低趨勢(shì);溫麥6號(hào)和周麥18籽粒中Mg含量顯著增加,其他6個(gè)品種(系)均顯著降低;8個(gè)品種(系)葉片中Fe含量均升高。百農(nóng)418和周麥26的Ca、百農(nóng)1306和百農(nóng)418的K、周麥18和周麥26的Mg含量(籽粒除外)變化模式相同。
[Abstract]:The characteristics of Pb accumulation of eight wheat genotypes (lines), such as Bainong 1306, Bainong 1309, Bainong 160, Bainong 418, Wenmai 6, Zhoumai 18, Zhoumai 22 and Zhoumai 26, were studied by using Hoagland's nutrient solution culture method. The effects of Pb on the accumulation of mineral elements such as Ca,Mg,Fe and K in wheat were studied in order to solve the contradiction between the accumulation of heavy metals and the utilization of mineral nutrients. The results showed that there were genotypic differences in Pb content of wheat grain, the Pb content of Banong 418 grain was the lowest, and that of Wenmai 6 Pb was the highest. According to the highest Pb content of the same variety (line), eight wheat varieties (lines) were divided into grain type, glume type, leaf type, and the corresponding variety (line) was Wenmai 6, respectively. Bainong 1306, Bainong 1309, Zhou Mai 22, 100 Nong 160, 100 Nong 418, Zhoumai 18, Zhoumai 26. Compared with the control without Pb (NO_3) 2, the content of Ca,K,Mg,Fe in different parts of 8 wheat varieties (lines) was different after treatment with NO_3. With the exception of Zhoumai 22, the content of Ca in the stem of Zhoumai 22 increased significantly, the other 7 varieties (lines) decreased, and the K content in leaves and glume decreased in 8 varieties (except Zhoumai 2226). The content of Mg in grains of Wenmai 6 and Zhoumai 18 increased significantly, while that of the other 6 varieties (lines) decreased significantly, while the content of Fe in leaves of 8 varieties (lines) increased significantly. The change pattern of Mg content (other than grain) was the same for Ca, 1306 and K of bimai 418 and Zhoumai 26, Zhoumai 18 and Zhoumai 26, respectively.
【作者單位】： 河南科技學(xué)院小麥中心/河南省現(xiàn)代生物育種協(xié)同創(chuàng)新中心;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(31671680) 河南省小麥產(chǎn)業(yè)技術(shù)體系崗位專家項(xiàng)目(S2015-01-G01)
【分類號(hào)】：S512.1

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