Effects of dwarfing allele sd1-d originating from 'Dee-geo-woo-gen' and its tall alleles SD1-in and SD1-ja on morphological characteristics concerning dry-matter production and photosynthesis on the genetic background of indica-rice IR36.

IF 2 4区 农林科学 Q2 AGRONOMY Breeding Science Pub Date : 2022-09-01 DOI:10.1270/jsbbs.22016
Misa Kamimukai, Birendra Bahadur Rana, Mukunda Bhattarai, Masayuki Murai
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引用次数: 0

Abstract

sd1-d has been utilized to develop short-culmed indica varieties adaptable to higher fertilizer-applications. Its tall alleles SD1-in and SD1-ja are harbored in indica and japonica subspecies, respectively. SD1-in possesses a higher effect on elongating culm than SD1-ja. The sd1-d of indica IR36 was substituted with SD1-in or SD1-ja through recurrent backcrossing with IR36, and two tall isogenic lines ("5867-36" and "Koshi-36") were developed. IR36, 5867-36 and Koshi-36 were grown in a paddy field, and the effects of sd1-d, SD1-in and SD1-ja on morphological characteristics concerning dry-matter production and photosynthesis were compared mutually. sd1-d diminished dry weight of total brown rice/m2 and total dry matter weights, but enhanced harvest indexes, compared with SD1-in. In IR36, shorter lengths of the first (flag) to third leaves, and more panicle-bearing stems, caused by sd1-d, compared with SD1-in-carrying 5867-36, and erect first leaves, not caused by sd1-d, could construct the canopy structure appropriate for obtaining a high rate of photosynthesis at an optimum LAI. Koshi-36 could be used for a mid-mother line to develop indica varieties adaptable to middle and low fertilizer-applications, due to higher effect of SD1-ja on yielding ability, compared with that of sd1-d, no breaking-type lodging, and resistances to diseases and pests.

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源自“dee -geo- wood -gen”的矮化等位基因sd1-d及其高等位基因SD1-in和SD1-ja对籼稻IR36干物质生产和光合形态特征的影响
利用Sd1-d培育适应高施肥量的短茎籼稻品种。其高等位基因SD1-in和SD1-ja分别存在于籼稻和粳稻亚种中。SD1-in对茎秆的伸长作用高于SD1-ja。通过与IR36的反复回交,将籼稻IR36的sd1-d替换为SD1-in或SD1-ja,获得了两个高等基因系“5867-36”和“Koshi-36”。以IR36、5867-36和Koshi-36为试验材料,比较了sd1-d、SD1-in和SD1-ja对水稻干物质生产和光合作用形态特征的影响。与SD1-in相比,sd1-d降低了糙米总干重/m2和总干物质质量,但提高了收获指数。在IR36中,与携带sd1- In的5867-36相比,sd1-d导致的第一(旗)叶至第三叶长度缩短,茎长多穗,而不是sd1-d导致的第一叶直立,可以构建适合于在最佳LAI下获得高光合速率的冠层结构。由于SD1-ja对产量的影响高于sd1-d,且无断裂型倒伏,对病虫害有较强的抗性,可作为中母系培育适应中、低施肥的籼稻品种。
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来源期刊
Breeding Science
Breeding Science 农林科学-农艺学
CiteScore
4.90
自引率
4.20%
发文量
37
审稿时长
1.5 months
期刊介绍: Breeding Science is published by the Japanese Society of Breeding. Breeding Science publishes research papers, notes and reviews related to breeding. Research Papers are standard original articles. Notes report new cultivars, breeding lines, germplasms, genetic stocks, mapping populations, database, software, and techniques significant and useful for breeding. Reviews summarize recent and historical events related breeding. Manuscripts should be submitted by corresponding author. Corresponding author must have obtained permission from all authors prior to submission. Correspondence, proofs, and charges of excess page and color figures should be handled by the corresponding author.
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