Evaluation of maize genotypes for fodder quality traits and SSR diversity

Over the environment, on the basis of days to flowering and suitability for dual purpose analysis was carried out of 100 genotypes including 75 F1s with 20 parents and 5 checks. Data were collected for grain yield, dry fodder yield, protein content in grain, protein content in fodder, TSS and juiciness. Variations between lines, testers and line × tester was significant for all characters. As both grain and dry fodder yield are important dual-purpose attributes, lines ICSA 202, ICSA 349 and ICSA 357 and ICSA 481 were found to be good general combiners for both grain and dry fodder yield. Two crosses viz., ICSA 29002 × SU 1565 and ICSA 356 × SU 1570 exhibited significant SCA effects in all the four environments whereas hybrids ICSA 552 × SU 1561, ICSA 202 × SU 1570,, ICSA 349 × SU 1561, ICSA 208 × SU 1561, ICSA 474 × SU 1561 and ICSA 357 × SU 1565 showed good SCA effects in normal spacing (E1 and E3) and ICSA 481 × SU 1561 and ICSA 399 × SU 1557 in wider spacing (E2 and E4) for both grain and dry fodder yield. These lines and crosses also expressed positive significant GCA and SCA effects for majority of the remaining fodder quality traits.

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Exploring the potential to capture variation in grain-straw yield and straw quality traits of tef [Eragrostis tef (Zucc.) Trotter] varieties.

10.31220/agrirxiv.2021.00078 ◽

2021 ◽

Author(s):

Habte Jifar ◽

Zerihun Tadele ◽

Kassahun Tesfaye ◽

Kebebew Assefa ◽

Kifle Dagne ◽

...

Keyword(s):

Metabolizable Energy ◽

Eragrostis Tef ◽

Quality Traits ◽

Straw Yield ◽

Fodder Quality ◽

Livestock Feed ◽

Straw Quality ◽

Improvement Programs ◽

Future Utilization

Abstract Tef [Eragrostis tef (Zucc.) Trotter] is an indigenous Ethiopian cereal which helps provide healthy and nutritious diets for people and a palatable straw for livestock feed. This study was conducted to determine the variation in grain-straw yield and straw quality traits of 35 tef varieties and a local check grown in two locations for two years. Straw crude protein (CP), in vitro organic matter digestibility (IVOMD), metabolizable energy (ME) and the yields of grain (GY) and straw (STY) were significantly (P < 0.01) affected by variety, environment and their interactions. GY, CP, ME and IVOMD were significantly higher in the Debre Zeit site compared to Holetta and, except for GY, in 2016 compared to 2015. About 150% and 25% higher mean CP content was recorded in Debre Zeit than in Holetta, and in 2016 than 2015, respectively. Positive and significant (P<0.01) associations were observed between GY and STY, among CP, ME and IVOMD, and among NDF, ADF and ADL. Among all studied varieties, Melko produced the highest grain-straw yield and best fodder quality traits. Based on the yields and qualities of both grain and straw, the production of Gimbichu, Quncho and Gola varieties conferred more than 40% economic advantage over the local check in the local markets. Our study generally identified varieties with high grain-straw yield and/or straw quality traits which provided economic advantages for tef production and an opportunity for future utilization in tef improvement programs.

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STARCH COMPOSITION RELATED TO PHYSICAL TRAITS IN MAIZE KERNEL

Journal on Processing and Energy in Agriculture ◽

10.5937/jpea25-31593 ◽

2021 ◽

Vol 25 (2) ◽

pp. 78-81

Author(s):

Marija Milašinović

Keyword(s):

Amylose Content ◽

Hardness Test ◽

Kernel Weight ◽

Quality Traits ◽

Maize Kernel ◽

Maize Genotypes ◽

Physical Traits ◽

Starch Composition ◽

Highly Correlated ◽

The Relationship

The focus of this study is on the physical quality traits and starch composition of various maize kernel genotypes grown in Serbia. Furthermore, the aim was to determine the relationship among these quality traits. Results obtained from the Stenvert hardness test showed great variability among the maize samples. The portion of the hard endosperm fraction (HE) ranged from 53.29% to 76.28%. Test weight (TWt) and 1000-kernel weight (KWt) of 10 different ZP maize genotypes ranged from 782.69 to 907.39 kgm-3 and from 128.40 to 376.50 g, respectively. The specialty maize genotypes had the highest content of amylose (27.8% and 28.9%). Yellow dent genotype, ZP 606, had the lowest amylose content in the kernel (22.3%). The results suggested that the composition of starch granule differed depending on the hardness of the endosperm. The amylose content was highly correlated with the physical traits such as TWt, KWt, density and HE.

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