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2018 | 71 | 4 |
Tytuł artykułu

Grain yield performance, correlation, and luster analysis in elite bread wheat (Triticum aestivum L.) lines

Treść / Zawartość
Warianty tytułu
PL
Wydajność plonu ziarna, korelacja i analiza skupień w elitarnych liniach pszenicy (Triticum aestivum L.)
Języki publikacji
EN
Abstrakty
EN
Wheat is a leading cereal, playing a crucial role in feeding the hungry world and improving global food security. The present study was undertaken to comparatively analyze the extent of genetic diversity for various quantitative traits among the wheat material exotic to Pakistan, received from CIMMYT (The International Maize and Wheat Improvement Center), Mexico. Nineteen advanced lines from the Semi-Arid Wheat Yield Trial (SAWYT) were studied along with a local cultivar, considered a control (NIA-Amber). Data were recorded on nine important agro-morphic traits. The compared genotypes differed significantly (p ≤ 0.05) in the studied traits, where line V6 produced the highest mean grain yield (6,049 kg ha−1) and maximum 1,000-grain weight (45.0 g). Other lines, V19, V17, and V2, also showed superiority in yield (5,723, 5,150, and 5,067 kg ha−1, respectively). Days to heading established a significant positive association with days to maturity (r = 0.7995), plant height (r = 0.3168), spike length (r = 0.2696), and spikelets per spike (r = 0.4391). The important yield associated trait, 1,000-grain weight, had a highly significant positive correlation (r = 0.6833) with grain yield. Cluster analysis for various quantitative traits showed important information about genetic diversity for the studied traits among wheat genotypes. Hence, selection of genotypes for higher grain yield based on these traits could be useful for future breeding.
PL
Pszenica (Triticum aestivumL.) jest jednym z najważniejszych zbóż, odgrywającym kluczową rolę w zaspokajaniu potrzeb żywnościowych ludności i poprawie globalnego bezpieczeństwa żywnościowego. Niniejsze badania podjęto w celu przeprowadzenia analizy porównawczej stopnia różnorodności genetycznej wybranych cech ilościowych u linii pszenicy egzotycznych dla Pakistanu, otrzymanymi z Meksyku (CIMMYT; The International Corn and Wheat Impro- vement Center). Dziewiętnaście linii pochodzących z Semi-Arid Wheat Yield Trial (SAWYT) badano razem z lokalną odmianą NIA-Amber, przyjętą jako kontrola. Dane rejestrowano dla dziewięciu ważnych cech agro-morfologicznych. Porównywane genotypy różniły się istotnie (p≤ 0,05) pod względem badanych cech. Linia V6 dała najwyższy średni plon ziarna (6049 kg ha−1) i największą masę 1000 ziarniaków (45,0 g). Linie V19, V17 i V2 również wykazały wysoki plon (odpowiednio 5723, 5150 i 5067 kg ha−1). Liczba dni do kłoszenia była istotnie dodatnio skorelowana z wysokością roślin (r= 0,7995), dniami do dojrzałości (r= 0,3168), długością kłosa ( r= 2696) i liczbą kłosków w kłosie (r= 0,4391). Ważna cecha wpływająca na plon – masa 1000 ziarniaków – była wysoce dodatnio skorelowana z plonem ziarna (r= 0,6833). Analiza skupień dla różnych cech ilościowych dostarczyła ważnych informacji o różnorodności genetycznej badanych cech między genotypami pszenicy, dlatego też wybór genotypów dla uzyskania wyższego ziarna w oparciu o te cechy może być przydatny do przyszłej hodowli.
Słowa kluczowe
EN
Wydawca
-
Czasopismo
Rocznik
Tom
71
Numer
4
Opis fizyczny
Article: 1747 [8 p.], fig.,ref.
Twórcy
autor
  • Plant Breeding and Genetics Division, Nuclear Institute of Agriculture (NIA), Tando Jam, PO Box 70060, Pakistan
autor
  • Plant Breeding and Genetics Division, Nuclear Institute of Agriculture (NIA), Tando Jam, PO Box 70060, Pakistan
autor
  • Plant Breeding and Genetics Division, Nuclear Institute of Agriculture (NIA), Tando Jam, PO Box 70060, Pakistan
autor
  • Plant Breeding and Genetics Division, Nuclear Institute of Agriculture (NIA), Tando Jam, PO Box 70060, Pakistan
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Typ dokumentu
Bibliografia
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Identyfikator YADDA
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