Search Result of "Nguyen TIEN TRUONG"

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effectiveness of Different Competition Environments and Thier Potential Use for the Development of Sweet Corn Inbreds and Hybrids (Zea mays L.))

ผู้เขียน:ImgNguyen TIEN TRUONG, Imgดร.กฤษฎา สัมพันธารักษ์, ศาสตราจารย์, Imgวัชรี เลิศมงคล

สื่อสิ่งพิมพ์:pdf

Abstract

Family selection was applied in segregated populations of three single crosses in three different environments; low-competition environment in non-replicated honeycomb design (HC), high plant density environment (HD) and alternate environments of the first two methods (HC-HD). Each family composed of 9 S2 lines which was equally separated into 3 sets. Each set was applied into each selection environment and selfed to obtain 3 S3HC, 3 S3HD and 3 S3 HC-HD for each family. Diallel cross was applied within each set and the best recovered single cross hybrid (A/A’) of each set was testcrossed to corresponding lines within set to obtain 27 within set testcross hybrids (recovered three–way hybrids, A/A’//A’’). Simultaneously, the 9 best recovered single cross hybrids were diallel crossed to form 36 sister line crosses, (A/A’//BB’). Selection for inbred line performance per se was effective in the respective manners; under low-competition environment in non-replicated honeycomb design, alternate environments and high plant density environment. High yield lines had a tendency to render high yield hybrids. However, ranking of yield could not be used as criterion for combining ability of lines. The sister line crosses either H ? H or H ? L were equally expressed in hybrid performances.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 040, Issue 3, Jul 06 - Sep 06, Page 595 - 603 |  PDF |  Page 

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ที่มา:วิทยาสารเกษตรศาสตร์ สาขา วิทยาศาสตร์

หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Development of Sweet Corn Inbred Lines by Family Selection under Different Competition Environments)

ผู้เขียน:ImgNguyen TIEN TRUONG, Imgดร.กฤษฎา สัมพันธารักษ์, ศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract

Sweet corn (Zea mays L.) breeding has focused on quality and agronomic traits with yield performance as second priority trait. The objective of the present study was to compare yield and to combine ability of sweet corn inbred lines selected from 3 original single crossed under different competition environments; firstly, under high plant density (0.75 ? 0.25 m); secondly, under low – competition spacing (0.866 m) in non – replicated honeycomb design; and thirdly, by alternate selection between the first 2 methods. The resulted 9 S3 family lines from each original hybrids were grouped into three line groups, totaling of 9 groups. Diallel cross was performed within each group, resulting in 27 intra – family hybrids. Simultaneously, they were crossed to a single cross, Insee2 to form 27 testcross hybrids. The results of the study showed that sweet corn inbred lines derived from selection under low – competition environment by honeycomb selection had not only higher yield but also higher combining ability compared with inbred lines derived from selection under high plant density environment and alternate selection between the first two methods. However, different sources of germplasm responded differently to the common tester.

Article Info
Agriculture and Natural Resources -- formerly Kasetsart Journal (Natural Science), Volume 040, Issue 2, Apr 06 - Jun 06, Page 289 - 296 |  PDF |  Page 

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ที่มา:วิทยานิพนธ์ ปริญญาโท (จาก: บัณฑิตวิทยาลัย และ สำนักหอสมุด มก.)

หัวเรื่อง:Development of Sweet Corn (Zea mays L.) Inbred Lines by Family Selection under Different Competition Environments

ผู้เขียน:ImgNguyen TIEN TRUONG

ประธานกรรมการ:Imgดร.กฤษฎา สัมพันธารักษ์, ศาสตราจารย์

กรรมการวิชาเอก:Imgดร.วาสนา วงษ์ใหญ่, รองศาสตราจารย์, Imgดร.ประภา ศรีพิจิตต์, รองศาสตราจารย์

สื่อสิ่งพิมพ์:pdf

Abstract


Dissertation/Thesis Info
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