Abstract
Eight single, six three-way and six double cross hybrids were evaluated with a standard control to assess their yield potential and agronomic performance. The study was conducted in the field and greenhouse using a randomized complete block design with three replications at the University of the Free State during 2002/03. The three categories of hybrids performed differently and showed high variation for the majority of characters studied. Three-way cross hybrids showed better performance for days to flowering (70·9 days after sowing), fruit diameter (3·2 cm) and fruit weight (30·3 g/fruit). As expected, single cross hybrids were the most uniform followed by three-way cross hybrids. Three-way cross hybrids showed 36·1 and 13·6% heterosis for fruit yield and fruit length, respectively. Higher mean heterosis for fruit yield (35·6%), fruit number (24·0%) and fruit weight (16·9%) was also observed in double cross hybrid. This study shows that three-way and double cross hybrids can be used in pepper hybrid breeding. Selection of inbred lines for crossing from a similar market group can decrease heterogeneity in these categories of hybrids.
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Claims 12
Claim · model-written summary
Hybrid classes differed and varied highly for most measured characters.
Verbatim
e0“The three categories of hybrids performed differently and showed high variation for the majority of characters studied”
t0“pepper”
Claim · model-written summary
Three-way crosses had better days to flowering at 70·9 days.
Verbatim
e0“Three-way cross hybrids showed better performance for days to flowering (70·9 days after sowing)”
t0“pepper”
Claim · model-written summary
Three-way crosses had better fruit diameter at 3·2 cm.
Verbatim
e0“Three-way cross hybrids showed better performance for days to flowering (70·9 days after sowing), fruit diameter (3·2 cm)”
t0“pepper”
Claim · model-written summary
Three-way crosses had better fruit weight at 30·3 g per fruit.
Verbatim
e0“Three-way cross hybrids showed better performance for days to flowering (70·9 days after sowing), fruit diameter (3·2 cm) and fruit weight (30·3 g/fruit)”
t0“pepper”
Claim · model-written summary
Single crosses were most uniform, followed by three-way crosses.
Verbatim
e0“single cross hybrids were the most uniform followed by three-way cross hybrids”
t0“pepper”
Claim · model-written summary
Three-way crosses had 36·1% fruit-yield heterosis.
Verbatim
e0“Three-way cross hybrids showed 36·1 and 13·6% heterosis for fruit yield and fruit length, respectively”
t0“pepper”
Claim · model-written summary
Three-way crosses had 13·6% fruit-length heterosis.
Verbatim
e0“Three-way cross hybrids showed 36·1 and 13·6% heterosis for fruit yield and fruit length, respectively”
t0“pepper”
Claim · model-written summary
Double crosses had 35·6% mean fruit-yield heterosis.
Verbatim
e0“Higher mean heterosis for fruit yield (35·6%), fruit number (24·0%) and fruit weight (16·9%) was also observed in double cross hybrid”
t0“pepper”
Claim · model-written summary
Double crosses had 24·0% mean fruit-number heterosis.
Verbatim
e0“Higher mean heterosis for fruit yield (35·6%), fruit number (24·0%) and fruit weight (16·9%) was also observed in double cross hybrid”
t0“pepper”
Claim · model-written summary
Double crosses had 16·9% mean fruit-weight heterosis.
Verbatim
e0“Higher mean heterosis for fruit yield (35·6%), fruit number (24·0%) and fruit weight (16·9%) was also observed in double cross hybrid”
t0“pepper”
Claim · model-written summary
The authors recommend three-way and double crosses for pepper hybrid breeding.
Verbatim
e0“three-way and double cross hybrids can be used in pepper hybrid breeding”
t0“pepper”
Claim · model-written summary
The authors recommend selecting inbred lines from similar market groups to decrease hybrid heterogeneity.
Verbatim
e0“Selection of inbred lines for crossing from a similar market group can decrease heterogeneity in these categories of hybrids”
t0“pepper”