开发甜玉米异源杂交种，以获得青穗产量和其他成分性状

Pub Date : 2023-12-31 DOI:10.3329/bjb.v52i4.70582

M. Vanipraveena, S. Talekar, R. Kachapur, S. R. Salakinkop, Patlolla Ramakanth Reddy

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引用次数: 0

摘要

为研究甜玉米的杂交程度，在 2019 年种植季节，采用随机区组设计对通过全二倍体交配产生的 42 个实验杂交种进行了评估。DEW的中间亲本异交率为-21至258；GFW为-25至2；GEY为3至229；DEW的标准异交率为2.13至134.95；GFW为82.93至317.07；GEY为-15.70至68.40。绿穗产量与 NKPR、DEW 和 GFW 的中亲本异交率和商业异交率呈显著正相关，而 GEY 与 TSS 之间无显著相关。杂交种 KH1831 × SC Syn、SC Syn × SC Sel 2 和 SC Sel 2 × SC Syn 在去壳穗重、绿穗产量和青饲料重量方面表现出最高的亲本中间异交性，因此，在育种计划中利用这些杂交种可实现产量和饲料的双重目的。孟加拉国植物学杂志52(4):999-1005，2023 年（12 月）

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Development of heterotic hybrids of sweet corn for green ear yield and other component traits

Forty two experimental hybrids generated through full diallel mating were evaluated in Randomized Block Design during kharif 2019 to study the magnitude of heterosis in sweet corn. Mid-parent heterosis ranged from -21 to 258 for DEW; -25 to 2 for GFW; 3 to 229 for GEY and standard heterosis ranged from 2.13 to 134.95 for DEW; 82.93 to 317.07 for GFW; -15.70 to 68.40 for GEY. Green ear yield exhibited positive significant correlation of mid-parent and commercial heterosis with NKPR, DEW and GFW in common, while no significant association between GEY and TSS was observed. The crosses KH1831 × SC Syn, SC Syn × SC Sel 2 and SC Sel 2 × SC Syn manifested highest mid-parent heterosis for de-husked ear weight, green ear yield and green fodder weight thus utilizing these hybrids in breeding programmes will serve for dual purpose of yield with fodder. Bangladesh J. Bot. 52(4): 999-1005, 2023 (December)

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