Inheritance of Seed Color in Biennial White Sweet Clover, <i>Melilotus alba</i><sup>1</sup>

Swenson, S. P.

doi:10.2134/agronj1942.00021962003400050005x

Cited by 6 publications

(1 citation statement)

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“…The seed color trait is relatively stable and is not affected by environmental factors [49]–[51]. In other crops, the number of genes controlling the seed coat color trait is variable; for example, the seed color trait is regulated by a single gene in flax [52], watermelon [53], and lettuce [54], while two independent loci were found in lentil [55] and biennial white sweet clover [56], and at least three genes are involved in controlling the trait in pea [57] and capsicum [58].…”

Section: Discussionmentioning

confidence: 99%

Genetic Analysis and QTL Mapping of Seed Coat Color in Sesame (Sesamum indicum L.)

et al. 2013

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Seed coat color is an important agronomic trait in sesame, as it is associated with seed biochemical properties, antioxidant content and activity and even disease resistance of sesame. Here, using a high-density linkage map, we analyzed genetic segregation and quantitative trait loci (QTL) for sesame seed coat color in six generations (P1, P2, F1, BC1, BC2 and F2). Results showed that two major genes with additive-dominant-epistatic effects and polygenes with additive-dominant-epistatic effects were responsible for controlling the seed coat color trait. Average heritability of the major genes in the BC1, BC2 and F2 populations was 89.30%, 24.00%, and 91.11% respectively, while the heritability of polygenes was low in the BC1 (5.43%), in BC2 (0.00%) and in F2 (0.89%) populations. A high-density map was constructed using 724 polymorphic markers. 653 SSR, AFLP and RSAMPL loci were anchored in 14 linkage groups (LG) spanning a total of 1,216.00 cM. The average length of each LG was 86.86 cM and the marker density was 1.86 cM per marker interval. Four QTLs for seed coat color, QTL1-1, QTL11-1, QTL11-2 and QTL13-1, whose heritability ranged from 59.33%–69.89%, were detected in F3 populations using CIM and MCIM methods. Alleles at all QTLs from the black-seeded parent tended to increase the seed coat color. Results from QTLs mapping and classical genetic analysis among the P1, P2, F1, BC1, BC2 and F2 populations were comparatively consistent. This first QTL analysis and high-density genetic linkage map for sesame provided a good foundation for further research on sesame genetics and molecular marker-assisted selection (MAS).

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Section: Discussionmentioning

confidence: 99%

Genetic Analysis and QTL Mapping of Seed Coat Color in Sesame (Sesamum indicum L.)

et al. 2013

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Sweetclover Improvement

Smith¹,

Gorz²

1965

Advances in Agronomy

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This paper outlines the concept of "programn and one set of elements that are considered to make up the program planning process in agricultural extension, and an example of practical program planning in Rhodesia is given. Although there is a wide variety of meanings attached to the term nprogramn in adult education, it has been stated by Thomas (1964) that all programs consist of two factors: (1) the relationship between participant and agent (usually oral); and (2) a variety of relationships with a variety of factors in the environment, all chosen and planned by these two parties. Four overlapping factors suggested by Verner (1964) as the basis for designing the learning experience, provide a simple model which could be elaborated to suit various situations and levels of planning:. (1) determination of needs; (2) identification of educational goals; (3) arrangement of learning tasks; and (4) measurement of achievement. Each of these steps is discussed. The cited program in Rhodesia, in the rather isolated Gokwe district, is based on cotton production. The foundation of the program is close liaison between specialists, extension staff, and the Cooperative Officer, and consists of the following essentials: a program that is technically sound and economically attractive; close cooperation of Extension and Cooperative functions; locally adapted recommendations, simplified to the essentials; emphasis on staff training (technical and team work); annual programs of main events; and monthly work program prepared one month in advance from the farmer/field worker level upwards. (DB) 4 U R DEPARTMENT OF HEALTH. EDUCATION & WELFARE OFFICE OF EDUCATION THIS DOCUMENT HAS BEEN REPRO. THOMAS, A.M. (1964). 'The Concept of programme in adult education' in JENSEN et al. Adult Education-outlines of an emerging field of University Study. AEA of the USA. 241-249. UNESCO (ED/WS/135). Evaluation of Experimental Literacy Pro e%-bs.

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