Genetic gain in yield and changes associated with physiological traits in Brazilian wheat during the 20th century

被引：115

作者：

Beche, Eduardo ^{[1
]}

Benin, Giovani ^{[1
]}

da Silva, Cristiano Lemes ^{[1
]}

Munaro, Lucas Berger ^{[1
]}

Marchese, Jose Abramo ^{[1
]}

机构：

[1] Technol Fed Univ Parana, Dept Agron, BR-85501970 Pato Branco, PR, Brazil

来源：

EUROPEAN JOURNAL OF AGRONOMY | 2014年 / 61卷

关键词：

Genetic gain; Grain yield; Photosynthetic traits; Above-ground biomass; SPRING BREAD WHEAT; GRAIN-YIELD; WINTER-WHEAT; DURUM-WHEAT; IRRIGATED ENVIRONMENT; STOMATAL CONDUCTANCE; IMPROVEMENT; PHOTOSYNTHESIS; PROGRESS; CHINA;

D O I：

10.1016/j.eja.2014.08.005

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

The objective of this study was to characterize physiologically wheat cultivars released in different decades and identify selection criteria for the continued genetic progress in Brazil. Ten cultivars released from 1940 up to 2009 were tested during 2010 and 2011 crop seasons. The following traits were evaluated: grain yield (GY), thousand-kernel weight (TKW), grain number per m(-2) (GN), plant height (PH), harvest index (HI), above-ground biomass (BIO), relative Chlorophyll content and leaf gas exchanges. The increase in grain yield was 29 kg ha(-1) yr(-1) a genetic gain of 0.92%, annually. Grain yield improvement was largely associated with HI (0.94**), number of grains m(-2) (0.93**), BIO (0.88**) and reduced PH (-0.93**). The post-anthesis Chlorophyll content, stomatal conductance and preipost-anthesis photosynthetic rate were positively correlated with GY. Genetic gains of Brazilian wheat are mainly related to the increases of HI, GN, and BIO. These improvements were achieved by reducing PH and raising gas exchanges and chlorophyll content. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：49 / 59

页数：11

共 45 条

[1] Physiological bases of genetic gains in Mediterranean bread wheat yield in Spain [J].

Acreche, Martin M. ;

Briceno-Felix, Guillermo ;

Sanchez, Juan A. Martin ;

Slafer, Gustavo A. .

EUROPEAN JOURNAL OF AGRONOMY, 2008, 28 (03) :162-170

[2]

Armour T., 2004, P 4 INT CROP SCI C B

[3] GENETIC IMPROVEMENTS IN WINTER-WHEAT YIELDS SINCE 1900 AND ASSOCIATED PHYSIOLOGICAL-CHANGES [J].

AUSTIN, RB ;

BINGHAM, J ;

BLACKWELL, RD ;

EVANS, LT ;

FORD, MA ;

MORGAN, CL ;

TAYLOR, M .

JOURNAL OF AGRICULTURAL SCIENCE, 1980, 94 (JUN) :675-689

[4] Regulating the proton budget of higher plant photosynthesis [J].

Avenson, TJ ;

Cruz, JA ;

Kanazawa, A ;

Kramer, DM .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2005, 102 (27) :9709-9713

[5]

Brancourt-Hulmel M, 2003, CROP SCI, V43, P37, DOI 10.2135/cropsci2003.0037

[6]

Calderini D. F., 1999, Wheat: ecology and physiology of yield determination., P351

[7]

da Silva CL, 2014, BRAGANTIA, V73, P87

[8] Breeding progress in morpho-physiological, agronomical and qualitative traits of durum wheat cultivars released in Italy during the 20th century [J].

De Vita, Pasquale ;

Nicosia, Orazio Li Destri ;

Nigro, Franca ;

Platani, Cristiano ;

Riefolo, Carmen ;

Di Fonzo, Natale ;

Cattivelli, Luigi .

EUROPEAN JOURNAL OF AGRONOMY, 2007, 26 (01) :39-53

[9] Agronomic and physiological traits associated with breeding advances of wheat under high-productive Mediterranean conditions. The case of Chile [J].

del Pozo, Alejandro ;

Matus, Ivan ;

Dolores Serret, Maria ;

Luis Araus, Jose .

ENVIRONMENTAL AND EXPERIMENTAL BOTANY, 2014, 103 :180-189

[10] Understanding the physiological basis of yield potential in wheat [J].

Fischer, R. A. .

JOURNAL OF AGRICULTURAL SCIENCE, 2007, 145 :99-113

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